I have one of your SGC-230 tuners that has developed a somewhat
annoying problem - most prominent on 20 meters in the vicinity of
When going from transmit to receive, an audio tone can be heard at a
fairly moderate volume level for about 15 khz either side of 14.200
mhz. I have heard the same effect on other random frequencies as well,
but this particular one is most annoying because I frequently operate
in that frequency range - and I'm certain that when this area is
cleared, the others will be too.
The 230 operates absolutely perfectly in all other regards.
The audio tone sounds to be around 800-900 cycles, and will last for
about a second before dropping out, though the actual transfer from
transmit to receive HAS taken place, and the incoming signals are
heard along with the indicated tone - and this effect has been
verified by using the 230 on several different pieces of gear from
different manufacturers, and of widely varying ages - the effect is
quite noticeable on all of them. It's VERY annoying on rapid Vox use,
and makes the unit worthless for contesting. No center carrier is
noticed when receiving in SSB or CW mode. only the audio tone across
the frequency range given above. It does this at EVERY change-over
from transmit to receive.
Apparently, there is some oscillator, or function inside the 230 that
remains active for a brief period after switching from transmit to
I returned the unit to you for repair some time back, and while you
DID make some unrelated firmware upgrades, the original problem was
NOT found or repaired at that time. Since I have not made any
substantial use of the 230 since that time, I have ignored the
problem, other than sending you another Email like this one, which was
either lost or ignored by you. But I am now planning another extended
RV trip, and WILL be needing use of the 230, and would appreciate some
response to my problem - surely I am not the ONLY user ever
experiencing this effect!
I certainly hope you can provide some insight into my problem, based
on KNOWN similar problems with other units - it's WAY to expensive to
again return the unit without at least SOME indication based on past
experience pointing to what is causing my problem.
So what do you say - have you seen this before, and do you have a
pretty good idea what's wrong, or do I have to either live with it,
sell it, or junk it?
Gary - KJ6Q
= = = = = = = =
BIGGEST THREAT to U.S. National parks?
Not pollution or environmental issues...
It's UN seizure, as allowed by our "political leaders",
already seen in Yellowstone Park and the Grand Canyon!
American government - giving our country away, million
by million, and acre by acre - to many who are sworn enemies.
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