[TenTec] Omni D issue

[tubsc66 at aol.com]

Thanks so much for the advice Jerry. Im fairly new to Ten Tecs and the older Omni's in
particular. I realize my problem sounds unlikely to most people, but it is there... I just
wondered whether this was a new twist I wasnt aware of, have a great weekend!

73,

Chris  KC5IIE 

 

 


 

 

-----Original Message-----
From: Dr. Gerald N. Johnson <geraldj at weather.net>
To: tentec at contesting.com
Sent: Fri, Sep 10, 2010 9:15 pm
Subject: Re: [TenTec] Omni D issue


There is no crystal on 14 MHz. Because 5 + 9 makes 14. No need to 
heterodyne the PTO its already in the right place. Could be the mixer 
balance is off so three times the PTO is coming out the PA in the 15 MHz 
region to confuse tuner. You have multiple radios, you could listen for 
it there. I didn't look at the schematic that closely to see how they 
caused the PTO input to feed through, probably stuff DC into the 
balanced mixer to unbalance it in place of the RF from the crystal 
oscillator. I didn't check the transmit mixer for a balance adjustment.

73, Jerry, K0CQ

On 9/10/2010 7:55 PM, tubsc66 at aol.com wrote:
> Yes, I know this is a silly sounding question, I did some more testing and it 
seems to an issue on 20 meters only, I can tune
> 40, 15 and 10 ( I dont have any WARC bands on this radio). Is it conceivable 
that there's an issue with the 20 meter crystal?
> I have an Omni C that loads on 20 just fine... Thanks for the input fellas, 
those of you that think Im a numbskull, you're
> right!
>
> 73's
>
> Chris  KC5IIE
>
>
>
>
>
>
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