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76  eHam Forums / Misc / RE: 160 METERS - SAME OLD ANSWERS? NO LONGER BELIEVE THEM! on: January 26, 2013, 12:12:14 PM
I'll assume  you understand that because of absorption, 160M is a night time band.
Here in the east the band is crowded end to end every night in the winter.
Do you have a good RX only antenna? I use 2 reversible Beverages and  hear a lot of EU activity at night also. Summer time, it's mostly stations east of the Mississippi I hear- but still a lot of them.

Dale W4OP
77  eHam Forums / Company Reviews / RE: H&Y Electronics on: January 24, 2013, 02:02:40 PM
There were as many "Palomar" companies as there were CB amps. Who knows where they were made.
The amplifier on H&Y is a "Palomar" by Texcomm- whoever and wherever  they are. One thing is for sure- none are "legitimate".

Dale W4OP
78  eHam Forums / Elmers / RE: Filter or Noise Canceler? on: January 23, 2013, 12:07:52 PM
Just a couple of thoughts. From a wavelength standpoint, even though your antenna was outside it still was likely very close to the noise sources. Secondly, unless you had  effective  eliminated common mode on your feedline (an appropriate choke/balun) your antenna was effectively not outside as the outer shield on your coax was then also part of the antenna and  a portion of it is inside the house..

GL- tough situation,

Dale W4OP
79  eHam Forums / Company Reviews / RE: H&Y Electronics on: January 23, 2013, 09:21:27 AM
The legality of the CB amp, its spectrum purity and the FCC rules do not apply to the OP as he is in China!  Does that not seem refreshing someone in China will buy an American made product?

I don't see anything on the H&Y site that is American made- what amplifier are you referring to?

Dale W4OP
80  eHam Forums / Company Reviews / RE: H&Y Electronics on: January 22, 2013, 11:20:21 AM
It is unfortunately a losing battle. These guys don't care about the IM or spectral  purity of their emissions or whether the amplifiers are illegal. It's all about the cost.
Ever wonder why so many stations- particularly the 10M SSB gang looks so horrible on a panadapter and sound even worse?

Dale W4OP
81  eHam Forums / Antennas and Towers and more / The Shive Wave Machine on: January 21, 2013, 11:31:30 AM
I was just made aware of this video by WR9H. Dr Shive certainly has a wonderful way of explaining topics. I hope others enjoy this as much as I have:
http://techchannel.att.com/play-video.cfm/2011/3/7/AT%26T-Archives-Similarities-of-Wave-Behavior     


Dale W4OP
82  eHam Forums / Antennas and Towers and more / RE: SARK 110 Antenna analyzer with color screen .1-200 Mhz $330 on: January 17, 2013, 04:07:51 PM
Thanks for the update Larry. My order was placed on the 9th- so looks like next week for mine.
Still using one of your early paddles as my favorite.

73,

Dale W4OP
83  eHam Forums / Antennas and Towers and more / RE: SARK 110 Antenna analyzer with color screen .1-200 Mhz $330 on: January 14, 2013, 06:26:17 PM
If, as I hope, you can move the reference plane to the end of the coax, as  most SNA's and VNA's can, then that is even more convenient. If the cable loss is low, it's as good as having the analyzer at the feedpoint.
Larry- has yours arrived yet?
Dale W4OP
84  eHam Forums / Boat Anchors / RE: Distortion meter for alignment? on: January 12, 2013, 09:57:32 AM
Tell us what it is you are restoring and where in a block diagram  the distortion meter is required.

Dale W4OP
85  eHam Forums / Antennas and Towers and more / RE: SARK 110 Antenna analyzer with color screen .1-200 Mhz $330 on: January 11, 2013, 08:04:04 PM
Do any of you know of a reasonably priced calibration BNC set Open/Short/Termination?

From memory, my type N HP set was over $700 some years back.

Dale W4OP

86  eHam Forums / Antennas and Towers and more / RE: Joystick Vertical Antenna on: January 11, 2013, 06:22:20 PM
It would appear that the wire connecting the joystick to the tuner is likely a lot of the radiator. Since it is all random anyway, why even build that low Q coil?
I must be missing something.

Dale W4OP
87  eHam Forums / Antennas and Towers and more / RE: SARK 110 Antenna analyzer with color screen .1-200 Mhz $330 on: January 10, 2013, 09:40:34 AM
I placed my order yesterday. For those of you here in the U.S., how long did it take to receive your analyzer?

Tnx,
Dale W4OP
88  eHam Forums / Antennas and Towers and more / RE: egg beater antenna phasing harness on: January 06, 2013, 11:15:32 AM
While I have not looked at the eggbeater, I always assumed (?) it was a pair of 1 lambda loops oriented at right angles and fed 90 degrees out of phase with one another. While 100 Ohm coax may be hard to find , 93 Ohm coax is very common- RG-62/U. You must obviously take the VF into account when you make the phasing line. Because the dielectric in RG-62 is a polyethylene tube with a spiral of polethylene to keep the center conductor centered, I would expect some variation in VF- so you would be smart not to  accept the factory spec but rather to qualify the cable yourself.

Dale W4OP
89  eHam Forums / Boat Anchors / RE: drake tr3 .33mf cap looks like resistor! on: January 03, 2013, 09:15:30 AM
.My high voltage is higher than specks like 40-50 volts,I thought more is always better.I adapted a heath supply.Could excess b+ cause tubes to cut off?I guess I'll get a resistor in there to back it down,maby in the supply there's a adjustable clamp type.
______________________________
I would run the rig at spec voltages.
Remember, when these supplies were built, the A.C. mains were around 110VAC. Now they run 120 and higher. Measure your filament voltage- it is likely high too. That means more heat and shorter tube life.
I built a bucking transformer for my vintage gear to reduce the mains back to 110 VAC.

Dale W4OP
90  eHam Forums / Antennas and Towers and more / RE: Factory tuned 440 Yagi. Can I trim for 445? on: January 02, 2013, 06:47:10 AM
I don't think you'll see any of the reputable antenna manufacturers using gamma matches for VHF let alone UHF. The uneven element illumination results in squint and there is considerable common mode on the coax. Those problems were the inspiration behind the Quagi design.

Look at M Squared, Innov, Directive Systems  etc to see how to properly drive a UHF antenna.

Dale W4OP
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