[Elecraft] 10M birdie and other assundries

[Tom Althoff]

Hi Jules!

I have a temporary workaround that I use...albeit a pain in the butt one.

That birdy seems related to an oscillator in the KPA-100 (HV PS?)..although 
Don can be probably be more specific.

I've found that by turning the power level down that the birdy shifts a bit 
in frequency...maybe a few kHz.   Enough to make a difference between 
hearing a station and not.

If a new country is sitting on 29.020 I'll twiddle the power level between 
transmissions...otherwise I avoid that frequncy during normal operation.

73 de Tom K2TA

----- Original Message ----- 
From: "J F" <phriendly1 at yahoo.com>
To: <elecraft at mailman.qth.net>
Sent: Tuesday, December 19, 2006 8:21 AM
Subject: [Elecraft] 10M birdie and other assundries


> Just out of curiousity, after spending some time on
> 10M during ARRL 10, I noticed a birdie around
> 28.019/20. Is there a way to eliminate this or move it
> below 28.000?
>
> As to my high current draw on 160, the KPA100 works
> fine into a dummy load and straight into the antenna.
> It does seem to draw more with the KAT100 in the
> circuit. I can't imagine much in the tuner that would
> cause such a problem (although I could be wrong). My
> thoughts drift towards a ground loop issue and/or rf
> getting back into the rig's control circuit. Guess I
> will be adding some further current chokes in the
> shack...
>
> Best wishes to all for the holiday season. May 2007 be
> good to you and yours...
>
> Cheers,
> Julius
> n2wn
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