[Icom] 756proII tuner

[Anthony R. Gold]

On Wed, 23 Apr 2003 16:11:14 -0400, you wrote:

> Have a new 756pproII, went to use on 6 meters- tuner would not match to=
 antenna. Pulled ant and put on dummy load..same problem
> checked ant with mfj anz. all ok 1.2 swr. shut tuner off and keyed =
radio into the dummy load..on ssb.. 50.125... the radio went to full =
output as soon as I hit the ptt button,did this in all modes ... hit ptt =
 and get full 110 watts out as though you were in fm. I reset the CPU =
TWICE ...no help. This only happens on 6 meters ,HF IS FINE.
>  I figured it had to be in the tuner curcuit where else would the radio=
 get the tone to modulate the carrier?
>  called Icom ,they said ...never heard of such a thing happening!
>  Any way it went back to Icom today. HAS ANYONE ELSE ever had a simular=
 problem and if so what was the cure .

It might have been interesting to use a spectrum analyser or even a
scanning receiver to figure on what frequency were those 110 watts were
and also the nature of the signal (pure CW or hiss or rough tone).  The
fact that the tuner couldn't match it suggests that it may not have been
anywhere near to 6m.  I'd say the tuner's difficulty was more likely to =
be
a result of the fault rather than the cause of the trouble.

Sorry to hear that you had the problem,

Tony