[TenTec] Ten Tec Omni-D Series B SWR Problem

[Mike]

Well what is puzzling is that it only does it on 40 and 80 meters ssb, 
20,15,10 meters works fine...BUT when hooked up  into a dummy 
load(Cantenna),Radio works fine too.I run other radios on my 40 and 80 
meter antenna and they also work fine.Just the Omni-d has a issue with 
my 40 and 80 meter antenna...

Mike

Dr. Gerald N. Johnson wrote:
> On Fri, 2008-04-18 at 11:58 -0400, Mike wrote:
>   
>> Hi Guys
>> I Have a Omni-D Series B Transceiver,When I use the radio on 40 and 75 
>> meters SSB.I tune antenna to Flat match,And when I talk the Swr Jumps up 
>> to 1.3 and 1.5 reflected,On dead key carrier I can get get my antenna to 
>> go flat match.It only does this when I talk.I've already changed all the 
>> 1N-4048 diodes on the swr board and fixed a low receive problem, and I'm 
>> running the drive at 2 to 2 1/2.Any Ideas on how to tame this problem???
>>
>> Tnx Mike
>>     
>
> Could be you are driving the PA a lot harder on voice than with the tune
> up carrier and making harmonics that are reflected by the tuner showing
> the voice level dependent SWR. Either that or parasitic oscillations in
> the PA...
>
> 73, Jerry, K0CQ
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
>
>