Bargain Jewels - HF Transceivers:
James Benedict (N8FVJ)
on
November 22, 2002
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It is time again to list inexpensive, used HF transceivers. The new listings are good performers for mobile operation, a backup rig or a first HF transceiver for the new ham. Some prices have gone up and others down. One example is the TEN TEC Corsair. This radio was previously listed as a bargain performer. Prices have gone up and $450 to $500 is not an uncommon price now.
KENWOOD TS-520S. This is the absolute bargain performer if one does not mind tuning the transmitter, using an analog readout and not operating on the WARC bands. The TS-520s has great availability, reliability and a slight performance edge over low cost radios from the same or earlier era. The power supply is holding up well after all these years. The final tubes are an inexpensive pair of 6146B, unlike others using very expensive sweep tubes. The driver tube is the cheap and available 12BY7A. A 12BV7 is a good substitute as well. The noise blanker is first class, a real plus during noisy band conditions. Performance is acceptable with a noise floor of -139dBm, 100kHz blocking of 116dB and a rather weak IMD dynamic range of 63dB (FT-101E is less). I would replace the high voltage capacitors for about $10 using the new 'snap-in' type caps. The cost is offset well as the power supply is built-in, a $50 used Astron is not needed. Average prices are $150, some have sold for $125 in good condition as of late.
ICOM IC-730. This radio is amazing and about $100 less cost now. The transmitter is no tune, solid-state and a digital readout to 100Hz is standard. For some reason ICOM used their expensive quad conversion receiver in this radio. Stock without filter options, the noise floor is -140dBm, has a 100kHz blocking range of 135dB and a IMD dynamic range of 92dB. Using quad conversion gets interesting. Add a FL-30 filter and the I.F. shift becomes variable passband tuning! Remove the 455kHz 2.4kHz mechanical and replace with an ICOM FL-44A or International Radio #109 filter and this radio gets to be a serious performer under poor band conditions. The ICOM FL-45 500Hz CW filter option is great for CW use. The radio does not have general coverage, 160 meters, nor FM. The WARC bands are included, much more important over 160 meters.
Other handy items are VOX; receive preamp, speech processor, variable RF gain and 10Hz tuning. I would take this radio over the bargain FT-747GX. Cost varies; many have sold in good condition this fall for $200. The average price is $250.
YAESU FT-747GX. This is a great deal. Digital readout, all HF bands, general coverage receiver, three filters standard for SSB/CW/AM, no tune solid-state transmit and overall good receiver performance. The receiver has a noise floor of -136dBm, a 100kHz blocking range of 120dB, and an IMD dynamic range of 92dB. FM is optional with a plug in module. The radio is missing a variable RF gain control, I.F. shift, speech processor, VOX and has 25Hz tuning- more coarse than most, but acceptable. This bargain was available for $200 a year ago, but $250 is now a low price and upwards of $300 being more common this fall of 2002.
I did not include the KENWOOD TS-130S as the ICOM IC-730 handily outperforms the TS-130S. If the price was right, I would not hesitate on a good condition TS-130S. The TS-140S is still demanding over $300 on the used market, thus not a 'bargain basement' contender yet. Another radio than is becoming lower in cost is the IC-718. I saw one go for $350 with the optional DSP card! I also did not include ATLAS, HEATHKIT SB-102, HW-101, SWAN, Galaxy and other similar older transceivers. Most hams prefer solid-state no-tune, digital readout, non-drifty VFO equipped radios. As for hybrid, older radios, the TS-520S represents itself well. After all, it is one of the first with a great performing noise blanker.
QUICK NOTE:
ASTRON RS-20. As far as I am concerned, a used $50 to $55 RS-20 is the only power supply I would use. Forget the switchers of late, Pyramids, Tripp-Lite, etc. The Astron is very reliable, has a separate, 'stand alone' over-voltage crowbar and is the ultimate in reliability. These cannot continue to be manufactured and sold for $89 to $99. The expensive transformer and computer grade capacitor is going to push this power supply over the $100 mark soon and the used market will increase in price as well. In a pinch, a trickle charger and lead acid battery will work. Never connect any charger to a radio without a charged battery in-line or the first capacitor in the radio will store the peak-unregulated output and apply about 18 to 19 volts to your radio! Have fun.
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Bargain Jewels - HF Transceivers:
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by SV9DRU on November 23, 2002
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May I suggest the Alinco DX70TH? It has a MDS of -138, BDR 129db and IMDDR of 90-92 according to the ARRL test results, and includes IF shift, speech processor, variable RF gain, general coverage HF plus 6m (100W)and standard built in narrow SSB and CW filters.
Current production item at used prices around $450, is definitely a good deal.
I have been using this rig side by side with my K2, with similar receiver performance for SSB. Of course, with its super narrow filters, the K2 is ahead when copying CW.
73 to all,
Marinos, sv9dru
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by KE6YOC on November 23, 2002
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I would suggest the Icom IC-718 which is on sale for $549.00 new. The Astron RS-20 has been plugged in here for 8 years without a problem. I currently use an IC-746 which now sells for around $850 used and has DSP, Auto tune and 100 watts out on 2 meters!
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by NE0P on November 23, 2002
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A great low cost HF transceiver is the Kenwood TS430S. These are now going for 300-350, and you get General coverage, dual VFOs, WARC bands, IF shift and an excellent receiver. You can also add both CW and SSB filters. This is kind of like the little brother to the Kenwood TS930S, and is very easy to use. The memory setup is the best I have ever seen for contesting. Store the station you want to come back to, and turn the knob to that channel. Hit the MR, and there he is. Press the MR again, and you are back to the VFO. Also hear of little going wrong with this radio. Had one for several years, and would like to get another someday. They just keep going and going.
Another great buy is the Icom 720A. Excellent receiver, and the best Pass Band Tuning I have ever used. The PBT is so good that I never had to buy the CW filter for it. The PBT would take any QRM out. The receiver is quiet, you get dual VFOs, a preamp, general coverage receive, the WARC bands and 160 meters, and again, easy to use. These can be found for around $250 used, but they do have one potential problem. The band pass filter selection is a mechanical switch which can go bad. There are mods to fix or replace this though. You can definitely tell one of these by the sound it makes when changing bands.
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Bargain Jewels - HF Transceivers:
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by KG4PZZ on November 23, 2002
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I'll have to give a plug to the Yaesu 747GX. I've been using mine for a few months now as my first HF rig, and I have no complaints. There are no "optional" filters for SSB -- only AM and CW. Overall the thing is a good little rig, I want more but the almighty dollar is keeping me away for a while. I'd encourage anybody looking for an inexpensive, first-time HF rig to get one. And don't forget, some 747's have remote mount heads. (Don't believe me? I'll take a photo of mine for ya :) ).
Fred KG4PZZ
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by LA1SJA on November 23, 2002
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If this line of comments goes on long enough, we will see virtually all stations mentioned that someone like for some reason.
Anyway, here are my additions:
Try the Icom IC-740 for CW if you come across one. The receiver is "K2 material". They hear the same even under harsh band conditions. The 740 RX is just a few millimeters ahead in pileups because the audio amplifier is better. K2 shines with its QSK in TX. Up here the 740 change hands for around 450 dollars. Probably less in the US.
The other one to look for for CW is the TenTec OmniD.
Extremely low RX noise and good and quiet QSK (if you cut the leads to the PA relay).
They were both designed before we got into todays sad period where most current radios, - even most of the really expensive models, suffer badly in RX quality from the inclusion of wide coverange SW receivers and wideband FM functions.
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by W0JOG on November 23, 2002
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I'll second the endorsement of the Kenwood TS-430s. In fact I have already "seconded" it as there are two on the operating table here. One is on PSK-31 and the other does SWL and HF schedule duty. Both go mobile in our conversion van and travel trailer. Consistently get good reports and reliability since the first was new in 1983 has been exemplary. I managed to find a matching supply for my second one via eBay for around $200. This is another Kenwood jewell, the PS-430. Transformer supply and keeps on going and going.
If you're going to spend $500 for a used rig, you might look at Icom's IC-718 and go new instead. AES has them for around $500 before add-ons. I have one and find it an excellent rig with fine SWL capabilities too. Get the DSP plug in to make it better.
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by N2YZS on November 23, 2002
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Just my couple of bucks worth (that's 2 cents adjusted for inflation ). The TenTec Omni D, series B or C makes a fine, low cost radio. A couple of optional filters, and you're really set to go. The Corsair and Corsair II are really fine radios, but , as the original article stated, prices have gone up on these radios. You have anywhere from 12 to 20 poles of filtering in the Corsair line (depending on what filters you use), pass band tuning, notch, and reliability and "famous TenTec service" which is a big plus in case you ever have to have the radio fixed. No bells and whistles, just solid performance. Of course, that's my opinion....
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Bargain Jewels - HF Transceivers:
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by K2PGB on November 23, 2002
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If you don't mind a short warm up period then the Swan
260 or 270 gives you 250 watts with a built in a/c supply. I don't recommend them for cw as the 6LQ6 will not last. The selling prices go from $100 to $150.
A 75 thru 15M SSB transceiver to consider is the SBE-34. Built in ac/dc supply and speaker. Puts out ~65w
SSB and is solid state except for the driver and final tubes. Uses a Collins mechanical filter to generate SSB. A small package selling for ~$125.
Chris K2PGB
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by W3BAB on November 23, 2002
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Just a short note about lead acid bateries. Some hams may use them. But, never charge them in a confined area without moving air! They produce an explosive combination gasses and possible sparks to ignite.
73's, Gene W3BAB...
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by W3BAB on November 23, 2002
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Just a short note about lead acid bateries. Some hams may use them. But, never charge them in a confined area without moving air! They produce an explosive combination gasses and possible sparks to ignite.
73's, Gene W3BAB...
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by N8FVJ on November 23, 2002
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For safety, use a sealed Gel Cell type battery and a trickle charger if the battery is to be inside your house or an 'out building'.
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by K8NQC on November 24, 2002
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Don't discount the trusty Drake TR4. This radio kept top billing for many years for good reasons, performance and reliability. This week I was operating 75 meter SSB DX with my TR4 in the alternate operating position to my Modern Rig. The Drake receiver was much better. I was copying DX stations Q5 as I heard others giving them weak reports. I hooked several modern radios up for comparison and the Drake was best. If you can find one with a noise blanker, it is better than the blankers in any newer rigs, including top-of-the-line. It cancels the noise without increasing adjacent frequency interference. Keep this one in mind since it is very available at a reasonable price.
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by W2LJ on November 24, 2002
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Another nice thing about the IC-730 is that the low end of power out can be reduced to 100 milliwatts. So effectively, you can have a GREAT QRP transceiver without effecting the high end! My IC-730 has a range from 100 mW to 100 Watts out. What more could you ask for.
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by K3YT on November 24, 2002
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I have an IC-730 as a backup to my FT-990. Great receiver,and I got a great deal on mine:IC-730
with FL-45 narrow CW filter, FL-30 SSB filter
(needed for the passband tuning instead of shift);
IC-PS15 power supply; HM-7 hand mike, SM-6 desk
mike; IC-730 Service Manual, plus all boxes, manuals, receipts, etc. I paid $270 for this setup and think it was the deal of a life time. I then sold my TS-520
which had been my backup rig. I'll probably keep this
rig forever, because of the great design and ease of
servicing.
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by K3YT on November 24, 2002
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Forgot to mention the mobile bracket was included
too. Also I wanted to mention that about 6 years ago
I had a Heath SB-1400 for about 2 years as a backup.
This is an FT-747 with the Heath name on it. No vox.
But the worst thing about it is the tuning. The tuning
knob is not a smooth rotary encoder, but one that steps every 25H with a distinct detent or "clicking" feel. This was very annoying, and it felt more like a 2m rig. I had sold a TS-520 to get that for the
general coverage receiver. What a mistake. I sold the disguised 747 and bought a DX-440 for SWL ( a great
portable, good filters, variable rf gain) and another TS-520. As I said I sold that 520 to get the 730.
Besides the receiver, this has the WARC bands. 30 is great for PSK, and I spend a lot of time on 17.
So my bottom line: If all you can afford is a 520, get it, but try to save for a 730. Forget the 747.
It was nice to have the 520 as it was the thing when I was first licensed in 1976, but no comparison to the later Icom IC-730.
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by WN3VAW on November 24, 2002
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The Kenwood TS-120S was not mentioned. It was the all solid state version of the TS-520S, and like the 520 & the TS-820S, it also lacks the WARC bands. They also tend to go on the used market for under $300, and if you don't mind the lack of WARC, it's well worth it.
The TS-820S is the "big brother" of the 520 & 120, and it is also going very reasonably since it (again) pre-dates and lacks the WARC bands. It has a few bells & whistles over the 520 (including 160, which I don't believe the 520 had), but otherwise it remains a good, solid radio.
The "x30" series radios replaced the "x20" radios when the WARC bands were first announced (well before they actually became available). The 120/520/820 morphed into the 130/530/830 radios. Because they are a little newer and include WARC (and I belive all three now had 160 capability) they are a little pricer than the "20" series but still very reasonable. (And don't forget about the 120V & 130V, the QRP versions of the 120S & 130S!)
When Kenwood phased out the 530 & 830 hybrids (which remained very popular for quite a long time, one of the reasons there are still so many out there), they replaced them with the microprocessor controlled all solid-state TS-430S & 930S -- general coverage receive, memories, and such. 930's are still pricer than a "bargain jewel" radio, and there are some known problems with them (so the radio may not cost much up front, but getting it up to spec...) but 430's are available for under $400. I miss my 430 to this day!
The "x30" radios were eventually replaced with the "x40" rigs. The TS-140S is now in the $350-400 price range. The TS-440S is also, but stay away from the 440. There's something about the heat sink and heat sink compound that deteriorates over time, and if it's not taken care of (currently a factory-only $150 or so fix), the processor's PLL loses it's lock, which makes the rig useless.
Don't forget about the later Drake rigs -- TR4C & TR4Cw hybrids are going for under $400, and you can also by the "twins" (R4C & T4XC) for about that. Once upon a time, the C-Line Twins were THE radio for DX'ers and contesters alike, especially if they've been upgraded with after market (Sherwood?) filters. Biggest problem with them is finding the finals, which can sometimes be temperamental -- hard to remember that "TV Sweep Tubes" used to be both common and cheap, which justified their use in the transmitter as the PA tubes!
73, ron wn3vaw
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by WA8VBX on November 24, 2002
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Seen a lot of good radios listed. Two I didn't see and would like to add is the Ten Tec Scout, sure it doesn't have all the bells and whistles but it is a great radio and the NB is outstanding. Second in my opinion is probably one of the best if not the best radio's ICOM made the IC-735. I have one as my backup rig and it still an outstanding radio.
Kurt
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Bargain Jewels - HF Transceivers: IC751
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by DL8OBF on November 25, 2002
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The ICOM IC751(A) has still one of the best receivers (as fare as dynamic range and sensitivity is concerned) and you get cheap ones for less than 500 Euro=$. So look out for these, external AF DSP and optionally computer control give the accessoires you expect from later models. Vy 73 UWE, DL8OBF
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by G4HZV on November 25, 2002
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The Corsair is a nice radio. I've had one for 15 years, although I haven't used it as my main station transceiver for a long time. They go for little money in the UK, so I keep mine as a standby that I can easily fix myself.
Anyone thinking of buying should check that the PTO is okay. The tuning shaft does wear and I've rebuilt mine using the Ten Tec overhaul kit.
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by K3ZD on November 25, 2002
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The Kenwood TS-440S is a great rig to own, IF you remove the synthetic rubber from a shielded compartment on the PLL board. That's what causes the PLL to unlock. Kenwood will do it for $150 or you can do it yourself but its a pain-in-the-neck and took me about about two hours using a dental tool. But after its done, you have a very stable rig that should be good for many more years.
Mark
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by K2WH on November 25, 2002
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Wow! Where are you getting TS-520's for $ 125????
O jave uet tp drr pmr pg yjrdr tohd hpomh gpt ;rdd yjsm %36-. {;rsdr ;ry ,r lmpe ejrtr upi jsbr drrm yjr,/
L3EJ
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by N6AYJ on November 25, 2002
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My TS-820S, which I bought new in 1978, is still my only HF rig. I have given it hard use almost every day since then. It still has the original driver and finals, and still delivers its full rated power. Everybody says the audio is excellent. It has never needed one bit of service or repair.
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by KU4QD on November 25, 2002
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Well, I disagreed a lot with Jim's original article, so I guess it's not at all surprising that I'd disagree now.
I don't see any radios appreciating in value. Yes, a Corsair goes for $450 now. It did then too. The $300-$350 posted in that article was totally unrealistic IME at hamfests and online. Similarly, his claims that you can get an IC-730 for $250 are not real world, at least not in the southeastern US or online. $350 is more typical. Ditto the FT-747GX.
Jim, you claim the IC-730 outperforms the TS-130S. How so? Rather than giving a blanket statement would you care to back that up with some facts? IMHO, the two radios are comparable, but you will spend more adding accessories to an IC-730. The TS-130S does belong on your list.
For that matter, so does the Ten Tec Argosy, a competing radio that does really sell for $250 or so. I'll be glad to point folks to lab test numbers to show why. Sure, it does not have 12m or 17m, which is a disqualifier for some people, but it has a fantastic little receiver.
Where is the Ten Tec Scout? For $300-$350 depending on how it is equipped the Scout represents much newer technology at a bargain basement price.
I agree with the gentleman who posted about the IC-740. That rig has an amazingly low noise floor and an excellent receiver all around. A well equipped one is well worth considering if the price is right.
The Ten Tec Delta II is probably the best kept secret out there. QST gave it one of the worst reviews ever, and it was totally unjustified. I am convinced the reviewer just didn't get how the PBT and Jones Filter interact. Yes, operation is decidedly different from an early '90s Japanese rig. Performace is very good indeed and the Jones filter/PBT combo, when properly used, allow you to sort out a single signal on a crowded band (i.e.: 20m, 40m at night) better than any other rig of its vintage. At $400-$450 it can't be beat, and acquiring a Delta II finally made me willing to part with my Argosy.
I notice no rigs listed in the under $200 price class. The Yaesu FT-7, Swan 100MBX, Tempo (Uniden) 2020, and Ten Tec Triton IV are all worth mentioning for the ham on a truly tight budget.
Any of the transceivers made by Panasonic and sold under the NCG nameplate are also very, very good if a bit hard to find.
I also maintain that the FT-747GX is no bargain. With no IF shift or PBT, no notch filter, no option for a narrow SSB filter, and generally absolutely nothing to fight QRM the rig is fatiguing to use, at best. There are many better choices for the same money.
73 de Caity, KU4QD
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by WB2WIK on November 25, 2002
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I agree with the second half of K2WH's post, above!
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by K1OU on November 25, 2002
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How about the Kenwood TS180S? I picked one up for $275 and am very impressed. While this is an older school solid-stater, it delivers a lot of bang for the buck!
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by N8FVJ on November 25, 2002
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I have been viewing these low prices from $125 to $170 on eBay. Some go for $200 though. Any accessory such as an optional filter, speaker, etc does raise the price. The market is very low right now or about $100 less than last spring/summer.
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RE: KU4QD Facts
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by N8FVJ on November 25, 2002
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I am most pleased to address the FACTS as backed up on eBay (pricing) and QST Reviews (performance). The TS-130 is a poor performer as compared to the IC-730. Here are the facts- IC-730: 139dB noise floor, 135dB blocking dynamic range, 3rd order IMD of 92dB and 3rd order intercept +10. TS-130S: 138dB noise floor, 110dB blocking dynamic range, 3rd order IMD of a poor 78dB and 3rd order intercept of a dismal -21dB. No contest, the IC-730 way outperforms the TS-130S with stock crystal lattice filters.
The prices of past sales are available on eBay. Perform a search on the IC-730 then go to 'completed items'. My posted prices, although on the low side, have been accurate on every article I ever written. $225 to $250 for a very good condition IC-730 is available a lot, not just one or two abused radios. Yes, some ask $300, but usually with options such as power supplies, desk microphones, antenna tuners, etc. In fact, I bought my IC-730 on QRZ for $175 from a gentleman in Hawaii. Worked great!
The Corsair prices were also accurate on my earlier article as well. It seems when I write an article and praise an item, the price goes up!
The FT-747GX will also easily outperform a TS-130S, plus has three filters standard and general receive for SWLing. A non drifty, accurate digital readout & solid-state finals makes this radio a bargain. The 3rd order IMD is 120dB, very good receiver.
If you want to pay $350 for a IC-730, go ahead. I rather pay fair market price.
As for the TS-130S, this radio will also perform ok and provide hours of entertainment. When the bands get tough, well............
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RE: N8FVJ Research for Articles
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by N8FVJ on November 25, 2002
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I spend a lot of time performing research before posting articles. The radios I post I have owned. I also get outside opinions from other trusted operators as well. I even research the repair history of the radios. For example, the IC-730 was discussed at length with world known ICOM expert Scott Malcom regarding performance and reliability. The TS-820, for example, has been failing regarding the digital display. Kenwood will not repair the radio and does not have the parts. Used radios are a risk regarding reliability and performance. I make sure my fellow Hams secure a good deal at a good price. I am like most other Hams, I am very careful and want the best bargain possible and accuracy is very important to me.
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by WV8HAM on November 25, 2002
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Another good alternative is the Yaesu FT-77. Solid State, minimum knobs. 100 watts + output on 10 thru 80 including WARC. Found my two units for 200 and 300 on eBay ond QRZ.com! One for the car and one for the shack.
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by N8FVJ on November 25, 2002
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I just bought a mint IC-740 with microphone and manual for $328- a Bargain indeed!
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by N8FVJ on November 25, 2002
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One more item, the limit in the article is $250 or less. I agree that Ten Tec radios are a bargain & hot performers. I have spent many hours over the years with the Vice President of TEN TEC- Tom Salvetti. My favorite TEN TEC radio is the OMNI V. No experience with the Delta or Scout, I suspect both radios are fine performers. Go to the Sherwood Engineering site and look up receiver performance & compare the IC-730 to the IC-781. Be prepared for a shock! Also, look up the TEN TEC radios.
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by NZ5L on November 25, 2002
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I agree that Ten-Tec radios are often a bargain. A Triton IV with only 50W output but GREAT in every other way, set me back only $150! A dream on cw and not bad for SSB, simple to use. I suppose I could have put in new transistors for another $50 but I never missed the "missing" watts. Another great find was an Atlas 210 for $75! This one had no RF output but with the help of a friend with a test bench, I put in two new finals and got 50W SSB out of it for another $40 and it served as a (simple, great sounding) mobile until traded! For the hollow state buff, I think the best buys going are the old Drake TR3s, 4s, &esp. 4C (and useful variant 4CW). Reliable as an old mule, easy to maintain and great for selectivity and talk power! I'll also agree that for most folks (or the non-collector) it's not worth seeking out the HT-44s or SX-117s anymore, and even less the HT-32s and SX-101z, even at a low price ('though I'm a softy for anything by National) and rigs like Valiants or Galaxys belong on a shelf somewhere other than an active hamshack. The great buys of tomorrow are likely to include full-featured QRP units like the HW-9 or the still pricey Argnaut 515. I hope so-I'll be waiting.
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RE: Bargain Jewels - HF Transceivers:
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by N8FVJ on November 25, 2002
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Corsair sales last 30 days- bare radio- average $400, one on eBay right now in average condition. May sell for less than $400 (I will post final price this Saturday). Corsair with desk mic, power supply- average $500. Some also had the matching VFO. Many sold for $325 to $350 last year!
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RE: Bargain Jewels - HF Transceivers:
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by N8FVJ on November 25, 2002
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FT-747GX sales last two weeks. Mint for $256 on Nov 21. Next, excellent condition with FM board- $324 on Nov 21. Next, excellent condition- $305 on Nov 12.
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RE: Bargain Jewels - HF Transceivers:
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by N8FVJ on November 25, 2002
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Good condition TS-520 sales in last week- lower prices. Nov 24- $175, Nov 22- $187, Nov 17- $182 & Nov 17- $177. Viewed many that sold for about $150 in good condition this fall. Many have sold for over $200. My prices are always at the low end or called 'bargains'.
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Bargain Jewels - HF Transceivers:
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by WI0T on November 26, 2002
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I would add that the Yaesu FT-757 GxII is probably a
better choice tha the FT-747 - provided you can find
it for around $350.00.
IMHO, Once one gets to 400+ range, I'd save some
extra money and get into a new ICOM 718 the 706 Mk2G.
73, Rod WI0T
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RE: Bargain Jewels - HF Transceivers:
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by KE1MB on November 26, 2002
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I will have to throw in my 2 cents also. The Kenwood TS930 has been a great used rig for me. I got mine for $550. It was made in 1984. You want one 84 vintage or newer. The rig works great, has a super receiver, great xmiter, and very pleasent to use. These radios have a design flaw in the power supply section, the biggest improvement is to remove the fan and install a box fan on the outside of the powersupply case. I run about 9volts to the fan and it keeps the heat sink cold. I also replaced the dropping resistors and zenors with voltage regulators. After this improvement the radio has proven to be a very rewarding radio for not all that much money.
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RE: Bargain Jewels - HF Transceivers:
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by N8FVJ on November 26, 2002
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My error, I meant the FT-747GXII with standard filters and later audio capacitor improvement.
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TS-130 versus IC-730
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by N0TONE on November 26, 2002
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Caity wrote:
"Jim, you claim the IC-730 outperforms the TS-130S. How so? Rather than giving a blanket statement would you care to back that up with some facts? IMHO, the two radios are comparable, but you will spend more adding accessories to an IC-730. The TS-130S does belong on your list"
Caity, I applaud your request. It gets very tiring to hear people say "outperforms", but they don't specify in what way.
I cannot speak directly to the two radios you mention, but I can come close. I have had both a TS-120S, and an IC-735. The two rigs are not in the same league. This is also evidenced by the nearly 2:1 difference in original retail prices.
In terms of raw RF performance, my measurements showed the TS-120S receiver to underperform the IC-735 reciever in dynamic range by about 20dB. The IC-735 is not particularly good at IMD; the TS-120S was nearly useless on 40 and 80 if connected to a high dipole.
Also, the TS-120S used an analog VFO, and it drifted enough to require re-tweaks while in a long CW or SSB QSO.
Surprisingly, given the analog VFO, the TS-120S had much higher phase noise than the IC-735. I did not have phase noise measurement equipment per se, but by using audio RMS voltmeters and compensating for filter bandwidth differences, I estimate that at 10kHz away from the carrier, the TS-120S was again about 20dB worse than the IC-735. I never would have made the measurement, except that the receiver never sounded "clean" to my ears, and I was trying to understand why.
The TS-120S' receiver audio chain had a high audio noise level - if the RF gain was reduced only a bit, the audio noise could dominate easily. Some of it was cured with the installation of lowpass filters in the audio chain, but not all.
Also, the TS-120S, like the TS-520S and other Kenwoods of the era, had pretty bad "blow by" of the IF filters, so you could often hear even faily weak CW signals that were supposed to be way outside the filter passband. I understand there's a mod to fix this, but it negates the noise blanker.
The TS-120S had a nice IF shift, but it lacked any form of notch filter, and the noise blanker was marginal and not adjustable.
On the transmit side of the house the TS-120S was a very weak CW performer, because it used relay T/R switching compared to the Icom's solid state switching, which makes the Icom's QSK a pleasure to use, though not the quality of Ten-Tec's. Additionally, the Kenwood generated some pretty darned strong key clicks unless the RF output power was backed down to 50 watts or less.
Given Kenwood's usual strength in SSB, it is surprising that the audio reports I received on the '735 were better than on the '120, but I think it's because that phase noise, which prevented a received SSB signal from being truly "armchair copy", was also present on transmit. Also surprising, given Kenwood's usual dominance in SSB, is that the IC-735 has a very good speech compressor, while the TS-120S did not. I believe the TS-130 added one, along with 160 meters and WARC.
The Kenwood did not lend itself well to DXing, mainly because of the necessity of adding an outboard VFO in order to work split. I bought the TS-120S new, and the outboard VFO was not available at the time, and it had not become available by the time I traded the rig. Lack of QSK and phase noise also made the TS-120S fatiguing for CW DXing.
Additionally, the IC-735 has a whole list of features missing in the TS-120/130:
* 10 memories to store frequency AND mode. I don't use memories much, but this feature allows cross-band and cross-mode QSOs. I DO work cross-mode fairly often, when I'm in the US CW sub-band and the DX chooses to use SSB.
* Dual VFOs make split operation trivial.
* IC-735 includes FM and AM, both absent on the 120/130. I didn't use much, but some find FM a good option.
* IC-735 allows use of the SSB filter when in CW mode; the 120 did not.
* IC-735 has one of the best variable noise blankers I've ever heard.
* Variable frequency notch filter. Not as deep as earlier tube rigs, but it's still useful.
* Passband tuning, although this does not work as well as the TS-120's did.
* 735 (but not 730) has general coverage receiver, although I do not find this useful
* Computer controllable, so the IC-735 is a useful contest and Field Day rig that can tie in with computer logging. For contesters, this feature alone puts the 120 and 130 on the "no way" list.
The rigs appeal to different audiences today. At hamfests (here in the desert west), the TS-120S/130S tend to go for about $100 to $150 less than an IC-730/IC-735. I believe that difference is appropriate. The TS-120/130 is a great starter rig, useful for a begining who's going to have a modest enough antenna to not overload the receiver. The front panel is simple and easy to navigate. The absence of memories and multiple VFOs mean it's pretty darned hard to accidentally transmit on the wrong frequency, band or mode.
The IC-735 is for the newcomer who can ante up a bit more (I've seen them in a somewhat dinged, but perfectly functional condition for about $250, but they usually go for $300 to $350). With the additional expense, the newcomer has a rig that can be used as she tries new things; DXing, contesting, FD.
Accessories pretty much don't matter - if the rig doesn't come with a given accessory, you'll be hard pressed to find it, whether the IC-735 or the TS-120/130.
AM
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RE: TS-130 versus IC-730
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by N8FVJ on November 26, 2002
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NOTONE, very accurate reply. I appreciate your detail & knowledge.
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Bargain Jewels - HF Transceivers:
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by K4IQ on November 27, 2002
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There's one big problem with all these "jewels" I don't think I've seen mentioned: after about 10 years or so, all this junk becomes unreliable. Circuit boards develop contact problems, tiny embedded parts age and change value, etc., etc. And, since most of us can't work on these rigs, they become increasingly a liability to own after a certain number of years. That's why I sell all my Japanese Junque after 5-10 years, depending on the indications it's giving (like intermittent functions or otherwise flaky operation).
Now, my old boat anchors seem to keep on ticking...and can be repaired, although they're not really functional in today's environment. Planned obselescence?
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RE: Bargain Jewels - Reliability Issues
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by N8FVJ on November 27, 2002
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Not all older radios are unreliable. I have perform research and the radios listed above are reliable. In fact, the ICOM IC-730 is more reliable than some newer radios such as FT-100D. Where do you get your data on reliability and what research have you perform to support reliability issues with the IC-730, TS-520S and FT-747GXII?
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RE: Bargain Jewels - Reliability Issues
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by KE1MB on November 27, 2002
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I beg to differ on the reliability issues also. All things will break. Your skills to repair a radio and what test eqpt you have should defenitly play a part in what you buy. Some folks only feel confortable working on tube gear, I myself can pull out a pair of tweezers and go right to the smallest surface mount boards. It does require a different set of tools. I have also invested in test eqpt. figuring that if all I could afford was someone elses left overs I had better be ready to repair it. And yes my test gear was broken when I bought it because all I could afford was the the non-working units and repaired them. Seems like people miss the days of home brewing their own rigs. I feel todays challenge is to repair what is out there and get a good bargin in trade for your skills. You pay for convience, if you do not feel confortable touching up a cold solder joint or using a can of contact cleaner then buy a new radio.
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RE: Bargain Jewels - Reliability Issues
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by KU4QD on November 27, 2002
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Jim, half a dozen replies to my post? I am very flattered.
Some thing we agree on: NOTONE did a very good comparison of the IC-735 and TS-120S. However, the TS-130S was a big improvement, particularly in the area of filtering, over the TS-120S, and the IC-735 was a big improvement in many areas over the IC-730, so, unfortunately, it doesn't address my comments. The IC-735 is a step up in price as well, and the IC-730 cannot be computer controlled, which was a disqualifier for NOTONE. I agree that the IC-735 at the typical selling price today is a bargain.
Jim, you wrote:
>My posted prices, although on the low side, have been
> accurate on every article I ever written.
We will continue to disagree sharply on that point.
> $225 to $250 for a very good condition IC-730 is
> available a lot, not just one or two abused radios.
Sorry, I follow eBay, qth.com, qrz.com, and, of course, eHam, and I just don't see it. The ones that go that low on eBay are either without a photo (hard to tell what you are buying) or else from folks with less than stellar feedback. Both are situations I prefer to avoid. I notice when you quoted prices you skipped the one on eBay (an IC-730S QRP version) that went for $700 :)
> Yes, some ask $300, but usually with options such as > power supplies, desk microphones, antenna tuners,
> etc.
The ones with those options go quite a bit higher than $300. The ones below $300 are bare bones radios. Without the filter to enable PBT the IC-730 suffers quite a bit (more on that later). In any case, I would recommend an IC-730 with filters for $350 over a bare bones radio for $250 any day because of the differences in performance.
> In fact, I bought my IC-730 on QRZ for $175 from a
> gentleman in Hawaii. Worked great!
Congratulations. You got an unusually good deal.
> The Corsair prices were also accurate on my earlier
> article as well.
Not in my experience. I also monitor the Ten Tec reflector.
> It seems when I write an article and praise an item,
> the price goes up!
Really! <chuckle> Then all the posts on the Ten Tec reflector, on eHam forums, and elsewhere about the Corsair I being a superior performer with outstanding lab test numbers didn't affect it at all?
> The FT-747GX will also easily outperform a TS-130S,
> plus has three filters standard and general receive
> for SWLing. A non drifty, accurate digital readout &
> solid-state finals makes this radio a bargain. The
> 3rd order IMD is 120dB, very good receiver.
Here is the crux of our technical disagreement. The FT-747GX does have better lab numbers than the TS-130S. There is a lot more to what makes a receiver listenable and what allows you to pick out weak signals than can appear in these numbers. Lab tests don't lie, but they don't tell the whole story.
The Yaesu does have better IMD performance. However, the mode independent filtering available in the TS-130S and the IF shift will eliminate adjacent channel QRM that the FT-747GX can't, taking a signal from unlistenable to quite copyable.
The only fair way to compare rigs is to put the side by side and A/B switch between a common antenna. The Ten Tec Delta II, for example, which has a very poor
reputation, does incredibly well in such a test on 40m because the combination of the Jones filter and pass band tuning allow you to isolate a weak signal next to a strong signal very well and clearly hear the weak signal. White the TS-130S is nowhere near as good as the Delta II in this area it is light years ahead of an FT-747GX.
> As for the TS-130S, this radio will also perform ok
> and provide hours of entertainment. When the bands
> get tough, well............
That is exactly when the TS-130S would shine over an FT-747GX. On a relative quiet, uncrowded band, such as 12m or 17m, the better receiver in the FT-747GX will produce a better result. On a crowded band with noisy conditions is where the Yaesu will fall down.
Thsi is why I keep stressing the Ten Tec Argosy, which is readily available in the same to a slightly lower price range. If you find one with the optional filters in place you have 16 poles of filtering, plus an audio filter, plus an excellent adjustable notch filter, plus a very effective noise blanker. Sure, you don't have general coverage, or 12, 17, and 160 meters. What you do have is a radio that will let you enjoy 20m, SSB or CW.
WV8HAM wrote:
> Another good alternative is the Yaesu FT-77. Solid
> State, minimum knobs. 100 watts + output on 10 thru
> 80 including WARC. Found my two units for 200 and 300
> on eBay ond QRZ.com! One for the car and one for the
> shack.
My objection to the FT-77, which I had for many years, is the same as my objection to the FT-747GX. For $300 you could have a much smaller Scout in the car with a Jones filter.
> One more item, the limit in the article is $250 or
> less.
Fair enough, but that tends to disqualify the FT-747GX and all but a stripped IC-730 or TS-130S. All of a sudden radios like the TS-120S and FT-77 do deserve mention, not because they are better choices that the rigs you listed, but because they truly meet your price point.
> Go to the Sherwood Engineering site and look up
> receiver performance & compare the IC-730 to the
> IC-781. Be prepared for a shock!
No shock there. How can you compare an IC-781, with it's wide array of filters, twin PBT, outstanding notch, and every QRM fighting tool imaginable before DSP with an IC-730? In pure lab test numbers, yes the IC-730 stacks up. It sure doesn't when it comes to using it on the air.
> FT-747GX sales last two weeks. Mint for $256 on Nov
> 21. Next, excellent condition with FM board- $324 on
> Nov 21. Next, excellent condition- $305 on Nov 12.
Not one under $250. Disqualified under your own terms. The $300-$350 range is typical.
The TS-180S is one I missed (thanks to K1OU for reminding me) and it really is a great rig for about $250. If you can find one with both SSB filters installed and the CW filter for that price, run, don't walk, to buy it. The TS-180S was the predecessor to the TS-930S -- a high end rig, not a starter rig like most of the others mentioned. It has a very good receiver indeed. The only drawback was that the WARC bands were offered only as a Kenwood factory kit later on. Most TS-180S you'll find won't have 12, 17, or 30 meters, and those that do will be more expensive. Another, similar radio would be the Yaesu FT-107M.
I've had the IC-730. It wasn't bad. It certainly wasn't all that.
73,
Caity
KU4QD
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Bargain Jewels - HF Transceivers:
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by W3DCG on November 27, 2002
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Last year upon returning to ham radio after over 22 years, I found a Corsair, okay condition, PTO a tad sticky but it did not affect usability in any way, matching P/S included, came with Shure 444, and the ToT 500 Hz CW filter. 450.00 shipped.
But eventually I wanted a radio that would interface to a computer...so off to the research again, decided I'd settle for new- so the 570DG fit my price range, figure I'd throw in the ONE Inrad filter allowed.
In the end I settled on a great used TS850s which included 2 CW filters, for a skosh less than a new 570DG with Inrad. Per QST Review I don't see how any radio can match the 850, especially for the price.
The 850 arrived, triple boxed [via AIR-1, an excellent eBayer] as promised.
That was over 3, almost 4 weeks ago.
The 850 still sits in it's Triple boxing, from when I took it home after examining it in the office.
That's how much I like the Corsair. I even had the PTO rebuilt in Tennessee. I added the InRad 250 to complete it. I wish I could find the matching VFO at a decent price, but those are rare and command premium prices for something so old.
I don't think the Corsair fits the "Bargain" bill anymore. I got mine not due to the article last year, I got mine because I had 500 bux to spend on a rig, and having one was a boyhood fantasy. I was not and still am not disappointed.
For a basic, no frills CW radio, that has but a whistle, and few bels (though I often get 10 bels over nine with it regionally), I can't imagine how anyone could be disappointed with the Corsair. The QSK for a "vintage" radio is smooth as silk and unmatchable at any price except via other Ten Tecs and perhaps a TS850, but that's in theory because I've yet to experience the "exemplary" keying characteristics of an 850 on CW as stated by QST.
I have not been so motivated to disconnect the Corsair and replace it with the 850- the Corsair on CW is THAT GOOD.
When the contesting bug tickles my fancy I guess I'll move the Corsair over...
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Bargain Jewels - HF Transceivers:
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by W9CW on November 27, 2002
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Re. K4IQ's post . . . the newest HF rig I have in my shack is an ICOM IC-730. And, with the exception of the relatively easy replacement of the T/R relay, it has required absolutely no corrective maintenance. And, it is now 20 years old. My Kenwood TS-520S, VFO-520S, SP-520, DG-5 combo (bought new in March 1978) has required no repairs whatsoever in 24 years of hard operating - still the original S2001 finals! The Ten-Tec Omni A Series B, used only for CW, is also over 20 years old, and with the exception of rebuilding the PTO, it too has been extremely reliable. Only my Drake R-4C/T-4XC and Collins 75A4 (25 and 47 years old respectively) require occasional tube or cap replacements. Many of the circa mid-70's thru mid-80's Japanese rigs were extremely well built, and will last long into the future. Proper care and preventive maintenance ensure long-term reliability, just as with automobiles. 73, Don W9CW
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RE: Bargain Jewels - HF Transceivers:
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by WB2WIK on November 27, 2002
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Re: TS-180S and the great comments on this rig...
I had one, back when it was new, and it had problems that casual operation will never reveal. The problems involved spurious emissions from the transmitter (that don't affect receiving in any way) and are essentially incurable, per Kenwood.
I sent mine back under warranty, and it was replaced with a totally different unit that had identical problems. Seems the heterodyne mixing system and filtering used did not sufficiently reduce a great number of spurs quite far from the operating frequency but easily viewed on a spectrum analyzer -- and well above FCC limits for spurious emissions from HF transmitters at the +50dBm carrier level.
Ordinarily, hams (including me) wouldn't give much of a hoot about this, especially if spurs land in harmless places, or if the rig is operated mainly QRP, etc. However, I did care, for three reasons:
1. The spurs didn't go down in amplitude when the power output (for the desired signal) was turned down -- or at least not nearly as much. This is to say, I could reduce output on 14 MHz to 10W (+40dBm), but the spur which was originally at +20dBm would still be at +20dBm, which means now, instead of being down 30dB from the carrier, it's only down 20dB. Kinda high, for any kind of spur. And...
2. I do use amplifiers, including ones having 15dB gain in the HF spectrum (like an 8877), and the spurs, also falling in the HF spectrum, would be amplified along with my signal -- taking a +20dBm spur and making it (potentially) +35dBm. That's almost 40 Watts of "spur." And...
3. Some spurs fell in sensitive areas of the HF spectrum, and would be modulated and thus traceable to my station, and I didn't want federal agents knocking at my door one day.
I got rid of the rig. As did several other engineering types I knew having exactly the same problem. Shortly thereafter the rig was taken off the market.
As such, regardless of how wonderful the TS-180S appears to be operationally, I wouldn't own one if it were free.
And I am a "Kenwood fan," and love my TS-850S/AT and other Kenwoods I've owned. Just not that one.
WB2WIK/6
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RE: Bargain Jewels - HF Transceivers:
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by K1OU on November 27, 2002
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Why is it anymore that these articles turn into nothing more than bitchfests and sniping and lame attempts to impart incredible amounts of knowledge on people? Are we that insecure that we always have to be right and have an opinion about everything?
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RE: Bargain Jewels - HF Transceivers:
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by N8FVJ on November 27, 2002
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Sorry you view the group discussion & opinions as 'bitching'. There is not a right or wrong here, it is a generous group stating their opinions. This has value to me and others. The 'fun factor' can be more rewarding than the best receiver performance. The performance numbers do not always add up. This is what the hobby is all about- fun!
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RE: Bargain Jewels - HF Transceivers:
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by N8FVJ on November 27, 2002
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Read the article, I stated the FT-747GX has gone up in price- just do not offer over $250 for the radio. This article is a followup to my previous article that praised the FT-747GX for $250! The TS-130S is a pretty package, however not in the same catagory of the IC-730 performance. As I stated, I would buy one in good condition if the price is right! As for the numbers, an example is the TS-140S. Test results were high, however the radio just does not perform like the test results suggest. I do not find this to be true. The IC-730S was my radio- HI. It is extremely rare and a collectors item. Perhaps five exist in the USA. Do not hang your hat on that, it is apples & oranges here. Check eBay, many IC-730 radios have sold under $250 The items completed show the final prices- how can you dispute 'ITEM CLOSED' Sold for $212.
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RE: Bargain Jewels - HF Transceivers:
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by N8FVJ on November 27, 2002
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I will post the final price on a IC-730 for sale on eBay. Auction closes in two days. For Hams seeking a fine radio, the IC-730 is the best bargain for the money. It is a better deal and performer over the TS-130S in every way. Yes, I.F. shift is standard just like the TS-130S. The optional FL-30 filter changes the IC-730 I.F. shift to passband tuning. The TS-130S does not have passband tuning, two filters standard nor an option for passband tuning. Many IC-730 radios on eBay in good condition sell for about $250 or even less without the optional CW filter, desk microphone or a power supply. eBay does not have any more problems with bad radios over any other site per surveys. The IC-730 comes with two filters, one crystal lattice in the 9mHz I.F. & a mechanical filter in the 455kHz I.F. as standard.
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Compare: IC-781 to IC-730
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by N8FVJ on November 28, 2002
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IC-781 Noise Floor: -135dBm, 100kHz Blocking Range: 131dBm, 3rd Order IMD: 98dB @ 20kHz
IC-730 Noise Floor: -140dBm, 100kHz Blocking Range: 135dBm, 3rd Order IMD: 92dB @ 50kHz
Certainly the IC-781 would outperform the IC-730, however the IC-730 has very good specifications far superior to most receivers!
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For Sale: ARRL Net: Ten Tec Corsair
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by N8FVJ on November 28, 2002
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New listing Nov 27- Ten Tec Corsair $400 shipped with rebuilt VFO & 1.8kHz SSB filter + 500kHz CW filter. Filters are worth $100 used, actual price would be $300 shipped if you sell the filters.
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KU4QD- Caitlyn
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by N8FVJ on November 28, 2002
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This person just may be the one of the most technically advanced lady operators in the USA. She is an extra class operator, her opinions are most valuable.
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KU4QD, TS-120/130, IC-730/735
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by N0TONE on November 29, 2002
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Caity,
I agree with you that the '730 and '735 are quite different. I repair rigs rather frequently, and am aware that the two share little. However, I disagree regarding the '120 and '130. In the case of the Kenwoods, I have operated both on the same field day, and as far as I could tell, the '130 was a '120 with more bands, a not-too-effective compressor, and the ability to switch to the SSB filter while in receive. The filter blow-by was present, as it was in all Kenwoods of that era, through and including the TS-830S. The interior of the '120 and '130 appear virtually identical. On the air at that field day, I heard the same phase noise in the '130 that I did on the '120. Phase noise, in my opinion, was the rig's worst sin, making reception fatiguing, and preventing a truly good transmitted signal. I made no measurements of the '130 however, so I can not accurately speak to it numerically.
The IC-730 is often touted by Icom fans as superior to the IC-735. The ARRL lab tests show similar numbers for receiver dynamic range but as you know that does not tell much of the story. So I shall simply beg out on the issue of the '730 versus the '735.
In that era of the late 1970s and early 1980s, Icom was never able to offer an IF shift function that operated identically to Kenwood's. Kenwood had taken the variable center frequency passband concept which had been implemented by Drake for decades, moved the functionality from tuned LC networks to a dual-mixer arrangement with variable oscillator and dubbed it "IF shift". Somehow they wrapped a skin of legalese around it that prevented Icom from using the concept quite the same way. So Icom implemented passband tuning, a variable IF bandwidth.
To the ham who expressed concern over the age of the rigs being discussed, you should not fear. There was a vast improvement in reliability when the Japanese radios first appeared. Whereas the Drakes and Collins rigs of the mid-1970s used 1940s vintage carbon composition resistors and so forth, the Japanese were using mil-spec film resistors and commensurate capacitors and other components.
When I put a Drake or Collins on the bench, my first step is to find which resistors have drifted the worst. Very few of those carbon composition resistors will be in spec; they drift high as they age. The film resistors in the Japanese radios (and later US-built radios) will all be in spec, unless they're physically damaged.
I can get in and out of most Japanese radios in two hours or less. Thanks to the multiplicity of circuit boards stacked atop other circuit boards (and the difficulty in getting to them) I cannot say the same for Drake, Collins or Swan. In any of the solid state gear mentioned, service is relativly easy; there are no surface-mounted components. My nearly 80-year old eyes have no trouble inside the rigs.
I recommend the TS-520S to most beginners. It has the right number of features, and the pi-output network's requirement of tuning gets the newcomer accustomed to the nature of adjustable impedance matching networks before he/she puts a set of finals at risk because of a badly-adjusted tuner.
Too, the Japanese were the first radios I'd seen in the amateur circles which used gold-plated connectors internally. I have never seen one get intermittent. In comparison, the tin-plated connectors used in earlier radios always get intermittent as they age.
73 all, a good discussion,
AM
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RE: IC-730 & PS-15 for Sale @ eBay- $310 Buy I
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by N8FVJ on November 29, 2002
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New Nov 29: Very good condition IC-730 & PS-15 power supply on eBay- $310 with 'Buy It Now'. The PS-15 power supply is worth $60, thus the radio value is $250.
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RE: HRO Used Gear- Corsair $399
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by N8FVJ on November 29, 2002
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Nice Corsair with keyer & headphones- $399. I would offer $375. Good luck.
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IC-730 eBay #1941033865 closed 12-30 @ 4:00pm EST
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by N8FVJ on November 30, 2002
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Excellent condition IC-730 on eBay sold for $257. Unit was guaranteed fully functioning, not DOA! This is the typical price on this great radio as mentioned in the article. HI.
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Ten Tec Corsair- Sold $265
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by N8FVJ on November 30, 2002
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Ten Tec Corsair- eBay item # 1940525676. Radio listed in good condition with rebuilt PTO by Ten Tec. Includes 250Hz, 500hz, 1.8kHz & 2.4kHz filters. Heck, I bought it myself. Looks just like prices as I stated the Corsair were selling for last year. How about that!
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ARRL Article- Which Radio Should I Buy- LAB NOTES
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by N8FVJ on November 30, 2002
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The ARRL posted an article by Assistant Technical Editor, Steve Ford. The article states a HF receiver should have a sensitivity of 135dB or better, a Blocking Dynamic Range of 120dB or better and a 3rd Order IMD of 85dB or better. I agree with the article and one should use these minimum specifications as a guide line for a good performing HF radio. It will be greatly appreciated when band conditions are poor.
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ARRL LAB NOTES a poor guide
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by N0TONE on December 2, 2002
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N8FVJ writes:
"The ARRL posted an article by Assistant Technical Editor, Steve Ford. The article states a HF receiver should have a sensitivity of 135dB or better, a Blocking Dynamic Range of 120dB or better and a 3rd Order IMD of 85dB or better. I agree with the article and one should use these minimum specifications as a guide line for a good performing HF radio. It will be greatly appreciated when band conditions are poor. "
Actually, Jim, when band conditions are poor, or when you have a truly mediocre antenna, ANY dynamic range is good enough. With a poor antenna, the only spec that counts is the MDS (minimum discernable signal, aka sensitivity). By the way, that measurement is in dBm, not dB. Actually, the IEEE specifies it in dBf, but dBm works, too, just a conversion factor involved.
You only need the good dynamic range if you have a good antenna and the bands are busy. It's when you have simultaneous strong signals and weak signals that you need the good receiver.
Remember that the ARRL is funded substantially by advertising (their 2001 annual report shows that advertisers provide 80% as much money as members do). There is no way that an ARRL lab guy is going to write a recommendation that sets the bar above a substantial number of rigs produced by the major advertisers.
On the other hand, G3RZP wrote a great article in the May/June 2002 issue of QEX entitled "Receiver Dynamic Range: How much do we really need?". Peter made a very strong case that NONE of today's receivers has "enough", and even the better ones are lacking a good attenuator. Because the third-order intermod products go up and down in level 3dB for every 1dB change in input levels, you really need an attenuator in 3dB steps or smaller, not the 10 or 20dB that most rigs offer.
Consider the QST article to be "good enough" for rigs to be used for ragchewing with low dipoles. Bit if you're really trying to maximize your station's potential, the QST article can lead you into some very disappointing rigs.
AM
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What we really need
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by N0TONE on December 2, 2002
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Jim, you began the article with "it's time again..." whereas I think you meant "I decided to..." unless there's some published schedule for these things!!!!
Say, since you've done this serious investigation, why not actually create a matrix of the data? Yahoo offers free webpages (via Geocities). I think you should list each rig's basic parameters (features) and then the performance and then typical pricing.
For instance, when a newcomer asks me the difference between rigs, I really would like to see a matrix where I can check to see which rigs cover WARC. To me, that's major - the WARC bands are a wonderful haven for newcomers because they're more welcome, there are slower CW ops there, and their wire antennas are more likely to yield similar signal strength as others on the band. As it is, I have to dig through old QSTs and so forth, and just remember which rigs do what.
I'd have three areas for comparison numbers: Basic parameters, performance, and extra features.
Basic parameters:
Bands covered: 80-10/160/WARC
Modes: CW/SSB/AM/FM/etc
Style: Mobile/portable, small home station, large home station
Performance:
Transmit: Acceptable (IMD below 30dB, and CW rise time at least 2mS), unacceptable (worse IMD or too-quick rise time giving key clicks).
Receive: Dynamic range (must specify at narrow spacing of 1kHz or less if possible), sensitivity, availability of QRM-fighting devices like noise blanker, IF shift, notch)
Features: How to list! Internal power supply, internal tuner, DSP toys, PC-interfaceable, remote front panel, full QSK (a must for me), speech processor, digital displays, memories...
For a bare-bones xcvr, consider the featureless TR3 by Drake. That's about as Spartan as it gets.
I think you'll find it surprising what the lowest-cost HF transceiver is that covers all nine bands from 160 through 10. I know I did.
Any more, the absence of 160 or WARC, to me, puts a rig on my "avoid at all costs" list. Although I keep recommending the TS-520S to newcomers for some reason!
AM
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Reply to NOTONE
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by N8FVJ on December 2, 2002
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Most of the time for solid copy HF communications, a high dynamic range is not required and on HF, a sensitivity over 134dB is not needed either. Many of my articles have posted receive & transmit test data regarding the high-end equipment for direct comparison. The experienced buyers of high-end equipment can understand the specifications as well.
This article was directed for the ham wanting to buy their first HF radio, but does not have much over $300 to spend. Most of these new to HF hams do not understand the test data in intimate detail, however the experienced ham community is prepared to answere these questions on this open forum. The 'new to HF' hams like to listen a lot and most spend time on 75 meters at night after work listening to 'swap nets' and general conversation. Noisy, crowded bands require a good receiver. It is a disappointment when only half of the conversation is received due to a marginal receiver. The IC-730 with stock filters and not having DSP will receive as well as my IC-706MKIIG with DSP on 75 meters at night. Thus, it is important the newbies get the best receiver they can afford. The TS-520 is marginal, but will perform on HF with built-in power supply and an impedance matching network to tune antennas up to a 2.5 or 3 to 1 SWR for the lowest cash outlay. The FT-747GXII offers general receive for the ham that wants SWL capability, but do not expect this radio to perform like the IC-730. A great alternate to the FT-747GXII is the IC-728. It is simular in design to the IC-728, but the IC-728 has passband tuning and a better synthesizer that includes lower phase noise & 10Hz tuning. I noticed this radio has also dropped in price to about $300. It is highly recommended over the FT-747GXII, perhaps I should have included it. The IC-728 has very good transmit specifications as well. As for transmit specifications, it is amazing how poor the newer equipment performs. I do have a IC-706MKIIG, but operate it above 10 meters. The IC-740 I just purchased is going to be used for HF communications. The transmitter is reasonable regarding transmit IMD. I also operate my radios at 80 watts or less output to keep the transmit IMD products lower. As mentioned, the TEN TEC products are a good value. I recommend these to the new ham, but suggest the WARC bands be included. Pleasure hearing from you NOTONE, your comments are appreciated by all of us.
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RE: Reply to NOTONE
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by N8FVJ on December 2, 2002
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Oh, the 'its time again' vs 'I decided to' is controlled by the market prices. The Corsair has gone up in price, the IC-730 has come down. I go on the internet just about everyday and track the asking & selling prices. I know exactly what the HF transceivers sell for, in fact, about as well as anyone anywhere. This is a hobby of mine as strange as it may be to others. Thus, 'It is time again' applies as the market changes, not my desires.
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NOTONE- Time for you to write an article?
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by N8FVJ on December 2, 2002
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Why not write an article on eHam? As for test data, I also view the QST Reviews with caution. I use other sources as well such as the Receiver Test data from the Sherwood Engineering site. The ultimate test is on my bench performing A/B comparisons. The factory stock IC-730 is superior to the factory stock TS-130S for voice communications during noisy & crowded band conditions- no contest. I will not ever be convinced otherwise.
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eBay Listing #194154665 ends at 9:50 PM EST IC-730
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by N8FVJ on December 2, 2002
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This IC-730 is only at $170 & ends in 4 hours on 12-02-2002. Radio listed under 'Shortwave Catagory', thus look up by auction number shown above. This is my last listing of eBay items for sale on this site.
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RE: Bargain Jewels - HF Transceivers:
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by K7UGQ on December 2, 2002
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I notice that some hams are confusing power in as in a Swan comment (250 watts input power) as compared to solid state rigs that advertise power OUT 100 watts.
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RE: Bargain Jewels - HF Transceivers:
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by GARDAIR on December 2, 2002
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I'm looking for an operator manual and VFO 820 connector cable for a TS820S...Also, suggestions as to a decent antenna for SWL will be appreciated.....Thanks...
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NOTONE, Could you answere This Please
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by N8FVJ on December 3, 2002
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I am not much of an antenna guy, NOTONE should have an answere. Or if NOTONE is not available, the 'elmers' colume is best.
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RE: eBay Listing #194154665 ends at 9:50 PM EST IC
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by N8FVJ on December 3, 2002
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This radio in very good condition went for $242. I believe I backed up my statements in the article. Good luck in finding that good used HF transceiver.
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I appreciate the compliment, but...
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by KU4QD on December 3, 2002
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Hi, Jim,
I appreciate the compliment, but I am hardly one of the most technically oriented female hams around. I know of at least two in this area who are head and shoulders more knowledgable than I am, but they doesn't post online. For an example of a far shaper technical woman in ham radio who does have a high profile internet presence, I would very respectfully point to Bonnie Crystal, KQ6XA, as someone whose level of knowledge of all things radio I cannot even hope to approach.
Thanks for the nice words, though. A little flattery never hurts :)
73,
Caity
KU4QD
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Bargain Jewels - HF Transceivers:
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by K8NQC on December 3, 2002
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One factor overlooked in this discussion is the new owner and operator. If the buyer chooses to be an appliance operator who has to pay for service, the choice of rigs is much different than for an operator who intends to do his/her own bench work. I am from the old school where I think I ought to repair my own equipment. That is a value statement and others are free to choose what they want to do. In 45 years I have only had two pieces of gear that I could not repair. Rigs like Collins, Drake, and the full sized Kenwood rigs have been easy to repair and parts availability has been good. ICOM with all their gimmics such as wax inductor forms are not welcome in my shack. My point is that the best buy is not the same for everyone and the buyer needs to assess their specific needs and match the gear to those needs. 73, Bill
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RE: I appreciate the compliment, but...
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by N0TONE on December 4, 2002
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Caity,
I had not replied to the earlier comment about your technical prowess, because I was afraid of being called a "wet blanket".
Clearly you have technical savvy, but perhaps not at the level of a dedicated RF engineer such as Bonnie.
However, there is one thing at which you DO excel more than the vast majority of posters, irrespective of gender. You state what you know, and do not speculate nor make claims which you cannot substantiate.
For that element, all hams should look to you as a model.
I also confess to feeling a kinship to anybody who has acquired a penchant for off-the-beaten path radios such as the Mizuho. In my case, it's vehicles - my vehicles presently consist of a hombrewed electric, one with a rotary engine and one with a 5-cyl. A tad eccentric, I'd say.
AM
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RE: Bargain Jewels - HF Transceivers:
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by K4IQ on December 4, 2002
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LOL, just checked back after a week or so, and this one's still going strong. That's hams! To answer a couple of questions, one directed at my post, and one, in general, I don't have any data, only anecdotal observation, regarding my assertion that this stuff becomes unreliable after five to ten years. I had a TS 430 that I bought in Akihabara in 1984 that developed an intermittent about 5 years later. I bought a TS 940 that was totally unreliable after about 9 years. I had a TS-850 that developed audio problems after 7 years. This isn't a scientific study, just observations. (Maybe it's because they were all Kenwoods, LOL!)
Personally, I don't have time to troubleshoot obscure (to me) micro-circuitry or whatever you choose to call it. I believe, to answer another question, some people really get into these discussions because 1) they have nothing better to do than spar with other hams over how many transistors can dance on the head of an IC; 2) some of them are just too cheap to buy a new rig; or 3) they are in the "business" of fixing and reslling junque Jap radios.
LOL,
73, K4IQ
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Bargain Jewels - HF Transceivers:
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by N3DT on December 4, 2002
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The comments about the FT-757GX are not all true. The radio does have FM as standard issue, does have RF Gain, does have IF Shift, does have Transmit audio processing, VOX, and the smallest tuning step is 10 Hz, possible with the up/down arrow on the mike, although you cannot see the 10 Hz numbers displayed. The stability is exceptional on my unit, probably better than the IC-738 I also have. I have had mine since '85 and have had no problems with it except my bo-bo's and they have been repairable. Excellent radio for the $700 bucks I gave for it back then.
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Mr. NOTONE
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by N8FVJ on December 4, 2002
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You are definitely not a 'wet blanket', yout insite, experience and intelligent comments are excellent. Keep up the good work.
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RE: Bargain Jewels - HF Transceivers:
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by WB8UHZ on December 6, 2002
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Hello
I liked you comment on the DX70TH , I have one and think it is a very good rig. Have you compared it with any other rigs ???
thanks
tim
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RE: Bargain Jewels - HF Transceivers:
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by KU4QD on December 7, 2002
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K8NQC makes an excellent point. I definietly consider myself an "appliance operator" in that I, like most hams, cannot repair modern equipment. I have, to my great surprise, made a few simple repairs on older rigs, but that is a long way from being able to do serious troubleshooting and repair work. I certainly have never homebrewed anything or even built a kit. My work schedule and other interests don't allow me the time to develop the necessary skills, and I'm honestly not sure I'm interested.
I don't have to be able to do auto repair to be a good and safe driver on the road. I certainly don't have to build a car. I feel many hams can make valuable contributions as "appliance operators", for example, in the very important areas of public service and emergency communications. All too often people who aren't really technically savvy are put down, and they shouldn't be.
Having said that, there are some great deals on radios that perform well when they work, but simply aren't the most reliable things out there. There are other rigs that do well after modification. Not everyone can do those mods.
To Jim's credit he has chosen reliable radios that anyone and everyone can enjoy. I'd like to think that is exactly what he had in mind. I don't doubt that the best deals out there are on technician's specials. For the rest of us, and that's probably the majority, Jim's focus and many of the responses seem to me to be right on target.
73 de Caity, KU4QD
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RE: I appreciate the compliment, but...
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by KU4QD on December 7, 2002
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Again, I appreciate the nice words. I do feel that there are many more active female hams out there than most people realize, many making real contributions to the hobby. I don't think I'm in any way exceptional.
Mizuho rigs have been marketed on again and off again in the US for 30 years. They have never done well. I honestly think they are outstanding at doing what they are designed to do and Takada-san has been responsible for some truly wonderful designs. I just don't think the majority of American hams do what the various Mizuho QRP rigs are designed to do. For general, run of the mill QRP operation there are many choices out there, all with more bells and whistles. Americans love gadgets, and the Mizuho rigs lack those regardless of which series of rigs you are talking about.
Mizuho's most popular series of rigs, the MX series handhelds, are among their best. We are talking about small, lightweight brick handhelds for HF and VHF SSB/CW. They consume anywhere from 145mA to 600mA on transmit and typically 70mA or less on receive, so they last a very long time on ordinary AA, AAA, or 9V batteries (depending on model). For someone interested in "out in the woods" QRP operation they are ideal for a number of reasons:
--rugged, simple design
--long battery life
--lightweight and self contained.
Before someone screams "FT-817", I'll point out that the Yaesu is none of the above. When you are going hiking, mountaineering, or whatever you are really unlikely to carry multiple or multiband antennas that are at all efficient. A single band, optimized design often makes sense if you want things truly Spartan and lightweight. Low power consumption makes all the difference in the world if you don't want to weight yourself down with batteries, and there is very little out there that does both SSB and CW that is more efficient than a Mizuho handheld.
With prices ranging from $50-$200 on the used market, with $100-$125 being common for the most popular models, the Mizuho monoband handhelds are truly "Bargain Jewels" among HF transceivers *if* you have a use for this sort of design. To most hams, 200mW-2W output, no digital display, a limited portion of each band, and absolutely not frills simply isn't appealing.
The fact that they are optimized for SSB, not CW, is even less appealing to the American QRPer. (They are fine CW rigs if you add the outboard CW-2S unit, but then they aren't quite as small.) To someone like me who loves to hike without carrying a lot of stuff and prefers SSB to CW, they are about the best thing out there. Of course, SSB QRP is many times more difficult than CW QRP, and in our society when so many, as has been pointed out, want instant gratification, that mode simply represents frustration. I, OTOH, get a thrill out of every contact I make, especially when I get a really good signal report. Mizuho handhelds are for patient operators.
Their CW rigs, OTOH probably would have more appeal but simply were never sold here in any number.
72/73 de Caity, KU4QD
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RE: I appreciate the compliment, but...
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by N8FVJ on December 7, 2002
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Caity, I am wanting a basic QRP rig. The IC-730S was a high performer, but just not 'campy' feeling. I want SSB & CW capacity and multi-band. The FT-817 is too mainstream. Digital or analog display is ok. What radio do you suggest?
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Bargain Jewels - HF Transceivers:
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by KD7TKQ on December 7, 2002
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I've noticed that with a very few exceptions, everyone is talking about >$300 radios, and in many cases pushing $500. I thought that I would find more mention of older and more affordable rigs. True, as equipment ages, it tends to need a bit more TLC to keep it running, but an older rig (60's/70's vintage) is still perfectly good if you can forgo some of the modern bells and whistles. While it is true that not everyone is capable of (or wants to) do their own repairs and maintenance, I'm sure there are a few of us still out there.
I should probably mention that I am a newly licensed ham, but an old-timer in many ways as far as radio and electronics goes. I've been a technician (profession, not license class) for nearly 30 years. So... to me the opportunity to pick up something that might need a little TLC is great if I can get a good price, as long as it hasn't been abused (thankfully, most ham equipment is rarely abused if sometimes neglected).
Anyhow, as an incentive to learn my code and upgrade, I've already bought me an HF rig, and I thought I got a pretty good deal. A Swan 500C, with 117XC power supply and the VOX unit (a bonus - didn't know it had it until it came) on eBay for $150 including the shipping. I think a good deal, since they often go for $150 or more without the power supply and plus shipping. It sort-of worked out of the box, but needed all the controls and switches cleaned, as well as some of the tube sockets tightened. But all the tubes are good, and the receiver seems to work well. On just a random wire antenna I've been able to pick up great signals on 20 and 40 meters. I'm assuming the other bands work - they just are too noisy to pick up much of anything, especially without a proper antenna. Transmitter looks good, and eventually I'll get to try it out.
Maybe more than you cared to know, but my point is that "only" a few hundred dollars is far beyond a "bargain" to many of us, and if you have the skill and desire to roll up your sleeves, perfectly good radios *can* be had for under $200. I may well outgrow it eventually (or not) but it will be a great first HF rig for me. I'd love to see some other hams' recommendations for under $200 radios.
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Bargain Jewels - HF Transceivers:
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by K8NQC on December 7, 2002
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We should all take note of the comments of KD7TKQ if we really care about this hobby. We want young people in the amateur radio. Young people often have tight budgets based on after school income or entry level wages while starting a young family. Not all parents are in a position to help much. Although this is not new, it is tougher than it used to be. There is a flood of used equipment around. Most hams used to keep "a" rig. Today many have more than they could possibly use. Even though most of us aging hams are set pretty well financially, we still try to squeeze every dollar we can out of our idle equipment. We should each look for opportunities to make investments in the future of amateur radio. We need to be more generous. Of course we will see failures where our attempts went to waste.
Newcomers need not wait for help. The want for radio equipment that permits us to use the ether has led many to learn how to build, repair, or be innovative in meeting our dreams. Most of the good bench people I have seen over the years developed their skills with such motivation. This is one path but those who may enjoy the hobby as appliance operators should not be overlooked as worthy of help from the ham community.
I remember my first 6L6 rig that I built on my mothers discarded cake pan. It worked along with my "command receiver" until I could save enough from my paper route to upgrade. I remember the parts and books and even an old receiver that I was given by another old ham who I will never forget. I won't speak the details but I have found it rewarding to pass along equipment and help to deserving young hams over the years. Only a minority stayed with the hobby but I don't regret one minute or one dollar that I put into this.
I encourage each of you who can afford it to help prospective young hams during this holiday season. It is good for amateur radio and good for our own spirits.
73, Bill
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Bargain Jewels - HF Transceivers:
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by N5XM on December 7, 2002
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For me, the key to finding dependable, well-cared for used rigs has been doing my homework, and paying detailed attention to the ads that I read. Patience is a prime requirement, and my policy is to parse the ads I am interested in such a way that I can sense what the seller doesn't say, as well as what they do say.
I agree it is great for new HF Hams to learn to tune the Kenwood hybrid rigs. I cut my HF teeth on the 520/530/830 Kenwoods, and I swear there were times I thought about throwing my 520 down a flight of stars, just to see if it could take the punishment. They're built like tanks.
As soon as I got my first Ten Tec, an Omni D, and fired it up on CW, I was hooked. I had read how good they were on CW, but had never seen one in person, and when I took it out of the box, I thought it looked kinda odd, like a penguin. Now, I consider them elegant. You just have to realize how important it is to do the research and learn what different radios are really worth, and remember that you will have to pay a bit more for those in mint condition. It just depends on how picky you are.
I do a little of the work on my HF rigs, but frankly, I prefer operating. Because of that, I'd rather buy used rigs in as good cosmetic and electrical condition as possible. I think what I am saying is that, if you are in the market for a used rig, you have to know what your own tastes and needs are. This is difficult early in you HF career when you have little or no experience. In my humble opinion, you just about have to look at spending somewhere between three and four hundred dollars, minimum. I see those as the facts, but again, it depends on your needs and bench skills.
We all are different to one degree or another, but this hobby should be fun. My post has not been about technical issues, but about planning and philosophy. Numbers are important, but, for me, there is just more to it than mere numbers. My advice is to get the rig with the quietest reciever you can afford. Then get on the air as often as you can, and learn for yourself why one rig is different from another. That's all I've got.
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RE: Over $300 Radios
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by N8FVJ on December 8, 2002
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That is my position. The article is specific to radios that cost $250 or less. That is why the TEN TEC Corsair did not make the list. Also, $250 maximum for the FT-747GXII. Not many high performers available for $250, the IC-730 is an exception.
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Basic QRP rigs
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by KU4QD on December 8, 2002
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Jim, you asked for it, so here it is :)
Well... most of the really basic QRP rigs aren't multiband. Here are some inexpensive suggestions in a list similar to yours. I'm going to draw the "line" at $300. As I am sure you know, QRP versions of 100W rigs (IC-730S, TS-130V, etc...) actually hold their prices better than the 100W versions. So... while you can get a TS-130S for $300 or under, you are very unlikely to find a TS-130V in that price class.
If you're willing to spend more, obviously rigs like an Elecraft K2 would top the list. We're talking bargains here, right?
Here goes...
Ten Tec Argonaut 509 -- the classic (and most common) analog Argonaut sells for under $200 consistently unless it has a ton of accessories with it. Basically, it's a Triton IV without the PA. 3W out, SSB/CW, 10-80 meters. Just make sure the PTO is smooth and the dial string is in good shape. The CW filter and calibrator are external accessories. Probably the best of the '70s. A bit big for camping, though, and tuning on 10m is too coarse. Every bit as mainstream as an FT-817, I'm afraid, in a vintage sort of way.
Tokyo Hy-Power HT-750 -- I actually got one on eBay for $303 with most of the accessories, so it might just make this list. It is my absolutely favorite ham toy ever. This is a HANDHELD, covering 6, 15, and 40 meters (not all band, I know) at 3W out (2W on 6m) SSB/CW. Digital readout, built in keyer, great receiver. The 2002 production run sold out and THP is not sure if they will have a 2003 run yet -- it depends on demand. $450 new, BTW. Sold in the US only in 1993, but a lot of QRPers imported them since. They do show up on the used market with some regularity.
Yaesu FT-7 -- great receiver, $200-$225 price class, 10W output, 10-80 meters, circa 1979. The only problem here is that there is no narrow CW filter. If you fit one (i.e.: from Inrad) then it's just a CW rig unless you modify it. Again, not small. One of the prettiest analog displays ever.
Ten Tec Argo 556 -- the QRP version of the Scout. I paid $300 for mine and it may be possible to find it a little cheaper, depending on condition and number of modules. Single band rig with plug in modules, can cover 10-160m including the WARC bands. The Jones filter is really nice. Early '90s technology. Relatively small and light.
Shimizu Denshi SS-105 -- very hard to find, but grab one if you do. This analog rig covers 10-80 meters. It was the Elecraft of the early '80s, but from Japan. Very few made it into the U.S. 10W out.
NCG 7/21/50 -- only covers 6, 15, and 40 meters, but the 110V AC power supply is built in, making it relatively compact. Similar in size to an IC-730S. Blue digital readout similar to Kenwood, great receiver, nice audio CW filter. 10W output. Once just went on eBay for $204.50. If it weren't for the ice storm here I would have grabbed it. I am very sorry I sold mine. Also known as the National RJX-751 in Japan.
Kenwood TS-660 -- only covers 6, 10, 12, and 15 meters, but does so brilliantly. Came out between the TS-130V and the TS-430V. Brilliant receiver, CW/SSB/AM/FM, will run split, takes same filters as the 430. Typical price around $300 nowadays, sometimes higher with lots of accessories/options or if mint. I have one and I love it. A bit power hungry (4.5A max. at 10W) and large for camping. In the same class as your IC-730S but with very different bands.
Kenwood TS-120V -- honorable mention only. About the cheapest digital readout SSB/CW QRP rig you'll find. Power hungry, big, and just OK. 10-80 meters, 10W, $200-250 price class. If you don't like a TS-130 you sure won't like this rig.
Ten Tec Argonaut 505 -- the original 1971 model is so-so but can be found very cheaply and is, I suppose, a classic. 2W out or so, 10-80 meters. Same caveats as the 509.
Yaesu FT-301S -- basically an FT-301 without a PA. 10W out, 1970s technology, roughly $200 on the used market. People swear by these. I borrowed one and wasn't impressed, but it may have been the one I had. Big.
There are many great models that weren't sold in the US and carry way too high a price tag when you see them here. An Icom IC-730S is a great example.
72/73,
Caity
KU4QD
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HT-750
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by N8FVJ on December 8, 2002
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That is a perfect radio for me. I will find one. I used to spend some time with Doug DeMaw who enjoyed QRP. My father-in-law was his good friend since high school. He had a pretty neat lab and an amazing antenna farm. He lived about 35 miles from my QTH in his later years. Tnx, Jim
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RE: HT-750
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by KU4QD on December 8, 2002
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See:
http://www.thp.co.jp/amateur/idx_xcv.htm (Japanese, no equivalent English page)
http://www.thp.co.jp/amateur/idx_xcv.htm (accessories, Japanese)
Interestingly enough, there is an English page for the matching 50W and 10W amps:
http://www.thp.co.jp/thp%20hp%20Eng/amateur_eng/others.htm#750
...and...
http://www.qsl.net/ku4qd/thp/ht750.html
Some articles/owner web sites:
http://www.arrl.org/news/features/1998/1001/5/?nc=1
http://users.erols.com/tjmc/ht750.htm
Some reviews:
http://qrp.kd4ab.org/1999/990516/0052.html
http://qrp.kd4ab.org/1999/990519/0040.html
Interestingly enough, I've had some of my best success on 6 meters, which is about my favorite band. Other than that I agree with Tom's review. 40m at night does require turning off the preamp to avoid overload on an external antenna.
http://www.eham.net/reviews/detail/687
A "bargain" isn't just determined by the price. To me, it's value for the dollar. The HT-750 delivers that for me, as does the matching HL-750 amp.
72/73,
Caity
KU4QD
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RE: Bargain Jewels - HF Transceivers:
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by N8FVJ on December 9, 2002
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To clairify a reply I made regarding ARRL testing of radio gear in QST 'Product Reviews'. I was referring to, at times, high test results do not seem to follow the preceived radio receiver performance. The only HF transceiver that I noticed this was a TS-690S that is the same as a TS-140S with 6 meters added. This is a rare exception also noted in the ARRL 'ON AIR' report as well. I believe ARRL testing is accurate & reported correctly.
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Installing the FL-30 in the IC-730
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by N8FVJ on December 15, 2002
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This article created a lot of interest in the IC-730. The IC-730 has an optional FL-30 that changes the I.F. shift to passband tuning. This filter adds a lot of performance to the radio. See 'Elmers' section dated December 15 for installation instructions for this FL-30 filter.
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RE: Bargain Jewels - HF Transceivers:
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by KA3BMZ on February 20, 2003
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I just bought an Icom 740 used and there is no operators manual. Does anyone have a manual they would be willing to copy and send me? Email me?
Write me at: theigoes@netzero.net
Thank you.
James
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RE: Bargain Jewels - HF Transceivers:
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by KI4EVD on December 22, 2004
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hi; I have a SBE-34 that I need a power cord for. if you or if you know anyone that might have one please e-mail me to let me know. my e-mail is unlsatman1@yahoo.com
thank you and 73's
from ki4evd "lester"
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Bargain Jewels - HF Transceivers:
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by KG2B on December 21, 2005
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I've gotten back on the air (after 24 years away) with a Yaesu Ft-301D. It's a pretty nice rig. Often less than $200 on ebay.
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