[Kenwood] TS-950 SDX - RF in the shack

[John Tait]

Subject: [Kenwood] TS-950 SDX - RF in the shack

Vince OM..
                Are sure that you have RF feedback?  'sounds to me like it
could be our old friend
"cold solder joint at the resistor block; CP1-CP4 in the PLL unit"..
  Check out the fix at  Mods.DK   http://www.mods.dk/view.php?ArticleId=1949
 I've come across this one a couple of times. It starts with an intermittant
distorted audio on the TX monitor on 10 and 12m.. As it gets worse, it
affects lower bands also, and eventually affects the transmitted signal as
well..
 The fix is a bit "hit and miss", but it worked for me..
  Good luck..
           John EI7BA  http://www.iol.ie/~bravo/


> Hi all,
>
> Thanks everyone for your advice - the ones I'm able to try I will and up
to
> now, I've added a couple of toroids around the mains lead but the problem
> persists except, strangely that its now intermittent making it even more
> difficult to track.  I'm going to experiment today (Saturday)  by
attempting
> to raise the run of the antenna a little and see what effect that has.
>
> Last night I could even crank up the linear and blow UK full legal around
on
> 24 & 28 Mhz (I worked a couple of station on there) and the TS950 was
fine.
>
> An hour later I've all the old "RF in the shack" back again at 20 watts
and
> even on 20m - strange.  I've searched for intermittent and can see none,
all
> of the antenna connections have been broken and re-made.  I simply can't
> work out what triggers it.  The FT1000MP and the 850 sail along supremely
> indifferent to it all and never miss a beat no matter what power I throw
> around.
>
> Interestingly as well, my wife complained of TVI on our satellite system
> last night at the same time I was getting the RF flying around here. I've
> eliminated the shack equipment by simply plugging the antenna into the
back
> of the radio but the symptoms are still there.
>
> Anyone want to buy a TS950SDX - (only a joke !!)
>
>
> Vince
>
>
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