I probably repair 5 or 6 of these units per year. I'd say 4 out of 5 have
been "peaked & tweaked" for better performance by an unknowing operator.
The result is a call to Bob and a package arriving at my door for repair.
I have found things like filters in the wrong slots, advertised "high
performance" filters installed which are basically crap, modifications
poorly implemented, poor alignment, bad switches, dirty connectors, faulty
IDC connectors, rodent urine, and a host of other issues. Rarely is there a
true failure within the radio but most are operator induced. If one doesn't
have the proper and accurate test equipment and the knowledge required, best
leave the covers on.
And NO, I AM NOT SOLICITING BUSINESS ON THE REFLECTOR. I have all I can
handle at present.
73
Bob, K4TAX
----- Original Message -----
From: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
To: <tentec@contesting.com>
Sent: Saturday, March 28, 2009 10:19 PM
Subject: Re: [TenTec] poor harsh audio on OMNI-V
On Sat, 2009-03-28 at 22:03 -0500, Bob McGraw - K4TAX wrote:
One thing not ruled out is a defective filter in the IF. This along with
other alignment issues can contribute to unsatisfactory audio.
73
Bob K4TAX
True but if the response curve was run manually or with an audio
spectrum analyzer like a PSK31 program, as I suggested a couple times,
that ailing filter would have been discovered. We haven't exactly
established what filters are present to know if the perceived response
is out of line. A trip to Sevierville may be premature without those
checks. Its certainly possible to have a faulty or none-standard narrow
filter.
73, Jerry, K0CQ
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