[TenTec] poor harsh audio on OMNI-V

[Bob McGraw - K4TAX]

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 at storm.weather.net>
To: <tentec at 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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