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Author Topic: Rig upgrade?  (Read 1378 times)
ZL1BBW
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Posts: 1368




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« on: June 10, 2019, 09:07:49 PM »

This was originally posted in contesting, but nil  there.

I am able to spend some $$ on the upgraded station.  I really want to be able to have 2 receivers and a spectrum display, I appreciate I can use N1MM to get a spectrum display as well with the 7300 and 7610.

1) Keep my IC7410 and get a 7300 tie them together using CIV/box and use that.
2) Sell the 7410 and buy 2 x 7300 and operate them as SO2R, presume  I will need to buy a SO2R box to interface them?
3) Or as I am mainly a single bander either 80 or 20  buy a 7610 and enjoy the two receivers.

Rig choice is sort of limited to Icom, they are the only dealership in NZ and come with a 5 year warranty here.

Do about 50/50 contests/chasing DX.   99% CW next to not FT8 or phone  would like to branch out into RTTY.

Any opinions, how to do its best ideas.

Thanks  Gavin ZL1BBW/ZM1M
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ex MN Radio Officer, Portishead Radio GKA, BT Radio Amateur Morse Tester.  Licensed as G3YCP ZL1DAB, now taken over my father (sk) call as ZL1BBW.
N8FVJ
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Posts: 888




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« Reply #1 on: June 11, 2019, 04:51:40 AM »

I advise buying the IC-7610. Although you are an ICOM person, ever thought about the new Yaesu FTdx-101? It is the top receiver on Sherwood Engineering receiver list.
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K7JQ
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Posts: 1282




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« Reply #2 on: June 11, 2019, 05:56:50 AM »

You'll get two receivers (and two transmitters) with two 7300's, and can operate true SO2R with them, versus SO2V with the 7610. Not much real-world difference between the receiver in the 7300 and the ones in the 7610, except for APF. Unless you want the display on a larger external display and a few other I/O bells and whistles on the 7610, I'd buy two 7300's, and put the $1,000 savings over buying the 7610 into your antenna(s) or other shack accessories. On a side note, if the 7610 goes south you're without a radio while it's being repaired. With two 7300's, you always have a backup radio if one goes down. You'll get many "opinions" on this topic Wink.

73, Bob K7JQ
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K0UA
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Posts: 4594




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« Reply #3 on: June 11, 2019, 06:40:18 AM »

I went with the two 7300's route for the reasons stated above.  Figures if one crapped out I would still have one rig.  I have been successful with operating two and once as long as the antennas are separated and the preamps are turned off and RF gain dialed back as needed. Many times on FT8 to have two DX fish on the line at the same time, and with Fox and Hound, of course they will always be on the same ( odd) time slot so no interference between the two rigs at all even with close in antennas. I also have two computers, two power supply's etc. So if you hear me on two bands at once it is really me.
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73  James K0UA
ARRL Missouri Technical Specialist
VK3TEX
Member

Posts: 72




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« Reply #4 on: June 11, 2019, 05:47:59 PM »

Hi Gavin,

If your 99% CW then the 7610 is the way to go. The 7300 has a relay switch for CW which is louder(in full break in) than the one in the 7610 which can have silent operation(Transistor Switching) i think. Read Adam Farsons website for further information on this. 7610 also has APF filter for CW which can benefit your operation as well, which the 7300 has not got.
Keep your 7410 as a backup rig.... .. .... ..

I have the 7300 and its a great rig but for uses like contesting i would go for the 7610.

The dealer down here in Victoria in Oz will export to NZ i think and has stock of the new Yaesu FTdx101D but it still has some teething problems from the factory, probably a good idea to wait a while for that one though, keeping ear to the ground to see when they have the issues sorted. Looks like a nice radio though.

One thing is that the 5 year Warranty from ICOM is fabulous here in VK and ZL... Gives good peace of mind...

Cheers,
Les VK3TEX.
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K7JQ
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Posts: 1282




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« Reply #5 on: June 12, 2019, 11:40:24 AM »

VK3TEX is correct if you use full break-in QSK. 7610 is quieter. But if you do semi break-in, no big deal with the relay noise on the 7300. Silent with headphones on. I had APF with my IC-7600 and rarely used it, especially in the heat of a contest (another knob to fiddle with). YMMV. With a few high power contesting hams within a few miles near me, I've never seen the OVF overload light go on. I have seen a few posts that the 7610 noise floor is a little lower than the 7300.

73, Bob K7JQ
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K0UA
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Posts: 4594




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« Reply #6 on: June 12, 2019, 01:18:50 PM »

Don't forget you can knock maybe 15 dB off of the relay noise on the 7300 with some mounting putty stock over the two relays.  If you don't have an amp you could disable the really loud one at the back which is the amplifier keying relay.  But sticking some 3M picture mounting putty over it knocks it way down too.  It is not silent when you finish, but it is way quieter.
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73  James K0UA
ARRL Missouri Technical Specialist
ZL1BBW
Member

Posts: 1368




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« Reply #7 on: June 14, 2019, 12:20:05 AM »

Thanks for the input folks.

It looks like a 7610 will be in the shack next month, going to sell the 7410.

The next thing will be to speed up the switching in the Drake L4B so guess a vacuum relay and one of those boards from e bay.

Hopefully have it in time for IARU Hf contest in mid July.

AS for the QSK issue, its not a patch on separate tx /rx locations/frequencies and aerials, then you can just hear sidetone and the station you are working, its fantastic, especially when condx are rough and you have someone trying to jam your signal.

Thanks Gavin ZL1BBWZM1M
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ex MN Radio Officer, Portishead Radio GKA, BT Radio Amateur Morse Tester.  Licensed as G3YCP ZL1DAB, now taken over my father (sk) call as ZL1BBW.
K0UA
Member

Posts: 4594




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« Reply #8 on: June 14, 2019, 03:24:34 PM »

Ironically, a friend dropped off his 7610 at my shack for a while. He is moving and out of antennas for a time. I really like the silent QSK switching of the 7610 and I really LOVE the Audio peaking filter in CW mode. It is going to be hard to give back...Dang it.!
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73  James K0UA
ARRL Missouri Technical Specialist
ZL1BBW
Member

Posts: 1368




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« Reply #9 on: June 14, 2019, 04:33:51 PM »

Ironically, a friend dropped off his 7610 at my shack for a while. He is moving and out of antennas for a time. I really like the silent QSK switching of the 7610 and I really LOVE the Audio peaking filter in CW mode. It is going to be hard to give back...Dang it.!

I had heard that the Peak filter was a good one.  We used Datong FL1 filters back then along with Racal receivers and Rhombics at 220ft every 15'.   But quite of ten FL1 would allow you pull something out the crud.

Just got to wait till the end of month now, when the dollars become available.

Cheers  Gavin
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ex MN Radio Officer, Portishead Radio GKA, BT Radio Amateur Morse Tester.  Licensed as G3YCP ZL1DAB, now taken over my father (sk) call as ZL1BBW.
ZL1BBW
Member

Posts: 1368




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« Reply #10 on: June 27, 2019, 10:56:08 PM »

Just an update, put the order in for the 7610 and extra tuning knob, so thats sorted, also ordered some QSK boards for the L4B, so that will be good.

thanks folks   Gavin
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ex MN Radio Officer, Portishead Radio GKA, BT Radio Amateur Morse Tester.  Licensed as G3YCP ZL1DAB, now taken over my father (sk) call as ZL1BBW.
VK2NZA
Member

Posts: 277




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« Reply #11 on: July 11, 2019, 08:21:05 PM »

Hi Gavin,
  I am a fan of the IC-7410, they have an excellent receiver, I have two for true diversity reception.
recently I was operating alongside friend who was participating in a contest with his IC 7300, alongside a number of other ops, I brought along one of my 7410's, the long and the short of it was that we could not see much difference in performance of the rigs but the IC 7300 was being affected by the nearby ops rigs, the 7410 wasn't.
Of course no screen on the 7410 but no noticeable performance difference to our ears.
My point is you may regret selling one of Icoms great sleeper rigs, if you don't need to sell keep it as a great back up.
I have not had the pleasure of operating an IC- 7610 as yet however! Good luck!
All the best from across the ditch!
Ross.
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