[Kenwood] TS-850 AGC / QSK Clicks and Pops

Sat, 13 Dec 2003 18:41:50 -0500

I meant AGC of course!
Ron
----- Original Message -----
From: Ron & Madhavi <[email protected]>
To: Dennis McGrew <[email protected]>; <[email protected]>
Sent: Saturday, December 13, 2003 6:03 PM
Subject: Re: [Kenwood] TS-850 AGC / QSK Clicks and Pops


> No problem/complains about the AGM, but I do agree with you that QSK with
> the 850 has a lot to be desired. In fact, it annoys me! So, I use semi
break
> in with mine. I am also a 95% CW op.
>
> 73,
> Ron, 6Y5/4S7RO
> ----- Original Message -----
> From: Dennis McGrew <[email protected]>
> To: <[email protected]>
> Sent: Saturday, December 13, 2003 5:03 PM
> Subject: [Kenwood] TS-850 AGC / QSK Clicks and Pops
>
>
> I recently purchased a used TS-850SAT,  8 million S/N.  I've spent some
time
> evaluating it's performance and have run across a couple of
characteristics
> that I didn't expect to find.  All the reviews I read touted the 850's
> strong signal handling capabilities, but the 850 I have falls short of my
> expectations.  I'm primarily a cw operator and want to use the 850's QSK
> mode. In all testing I've done the noise blanker and notch were switched
> OFF.
>
>
>
> 1) When I operate QSK cw, the audio output has spurious clicks and pops
> during the switch over between transmit and receive. The higher the
receiver
> background level is, the louder they are.   If I operate on 40 meters
(with
> it's high QRN levels) the pops and clicks are very distracting.  If  I
> transmit on a quiet (dead) band like 10 meters the clicks are NOT present.
>
>
>
> 2) The AGC circuit appears to overshoot, when in the "Fast" position when
> the received signal level is above S-9.  If I select  "Medium or Slow"
AGC,
> the overshoot problem isn't there.  Using this radio under contest
> conditions is a chore. The typically strong contest signals combined with
> the 850's " Fast AGC " overshoot makes copying high speed cw  difficult.
>
>
>
> I'd be curious to know if anyone has experienced similar problems with
their
> 850 and has a modification I can install.
>
>
>
> 73,  Dennis  K8IFF
>
>
>
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