[ICOM] IC751A - 10 meters problem

[D & M Pendergast]

Hello all,

Again I must concur with the other postings affirming this problem.  Poor
capacitors in the PLL section.  I have a 751 that had these replaced a
couple
of years ago.  In my case I lost audio response both TX and RX on all bands
above 30 metres.
Cant help with any details about the work involved though as I sent it back
to Icom for repair.  This is a common problem with the 751 series however as
Icom even released a service note regarding it.

Rig goes like a rocket again after being repaired.

Des - VK3DMP.

----- Original Message -----
From: "Tsachy L" <ernie at netvision.net.il>
To: <icom at mailman.qth.net>
Sent: Sunday, October 24, 2004 1:50 AM
Subject: [ICOM] IC751A - 10 meters problem


> Hi all & Shalom
> Need your advise please with my IC751A on 10m (other bands are normal).
> Generally, audio quality (TX & RX) suffers some distortion (it isn't clean
> and not as pleasant as on the other bands).
> The major findings \ symptoms:
> 1. Power output on 10 is lower than all other bands by 25-40 percent.
> 2. There exists some disturbance on the signal - both CW & SSB.  In TX,
some
> reports were "an ac(100HZ?)  buzz
>     or FM" in CW, or "a bit garbled" or "slightly distorted"  or "husky or
> hoarse" in SSB.
> 3. In Rx SSB , I note the audio to be not clean, indeed husky & slightly
> distorted as if "one needs to clear his throat".
>     In cw I can't get a clean note or tone - always sounds like there are
> some harmonics on the tone.
>
> All in all, this is only on 10m.
>
> Any ideas ? everything is welcome...
>
> 73 & tks in advance, de Isaac (Tsachy), 4Z4TL
>
> 4z4tl at iarc.org
> http://www.iarc.org/~4z4tl
>
>
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