[amsat-bb] IC-910H Receiver Repair

EC4TR Luis ec4tr.luis at gmail.com
Thu Aug 14 16:48:27 UTC 2014

Hi Les
I had same problem with my IC-910, the culprit was a pin diode, namely D710
1SV625, usually cause damage by static problems.
It's not too difficult to change.
If you dominate some Spanish, you can see the evolution of my rig in this
http://www.ure.es/foro/5-vhf-uhf/86547-icom ic-910H-has-lost-sensitivity-rx
Good luck
73´s Luis

2014-08-14 17:27 GMT+02:00 Les Rayburn <les at highnoonfilm.com>:

> Can someone recommend a repair service that has experience with the unique
> needs of VHF/UHF weak signal operation? My IC-910H is "ailing" and I don't
> want to be without it for long.
> I noticed that signals on 2M satellites sounded a  bit weaker than normal,
> but I attributed that to random phasing. Then during the Perseid meteor
> showers, all my QSO's turned into marathon events, many lasting well over
> an hour. Even at distances that should have been easy, and with stations
> running high power. I investigated further by monitoring two local beacons,
> and noticed that one was much weaker than normal, and the other could not
> be copied at all. Using WSJT, I couldn't even see the faint trace of the
> carrier.
> Also checked local NOAA weather stations...and I can normally copy at
> least one station on each frequency. Now, I can only seem to manage to hear
> stations on the two of them. Something is amiss. I swapped out cables,
> checked connections, etc. Nothing improves the situation. Transmit output
> power is normal on all bands.
> The problem appears to be isolated to 2 Meter receive, but it's difficult
> to check other frequencies here.
> Any recommendation on where to send my baby?
> --
> --
> 73,
> Les Rayburn, N1LF
> 121 Mayfair Park
> Maylene, AL 35114
> EM63nf
> 6M VUCC #1712
> AMSAT #38965
> Grid Bandits #222
> Southeastern VHF Society
> Central States VHF Society Life Member
> Six Club #2484
> Active on 6 Meters thru 1296, 10GHz & Light
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