[Elecraft] Birdy on 28020 with K2?

[Tom Althoff]

Yes..its the HV osc...I can make a theramin out of the diode/capacitor
strings.   Sadly..there is no trimmer cap that I can tweak.  But lowering
the power to get the KPA-100 to drop out kills the birdy which is fine in a
pinch if there is a new country ... Like the 5T5 that has been hanging out
on 28020.

73 de Tom K2TA

----- Original Message ----- 
From: "Tom Hammond" <n0ss at earthlink.net>
To: "Tom Althoff" <althoff at verizon.net>
Sent: Saturday, January 01, 2005 10:34 AM
Subject: Re: [Elecraft] Birdy on 28020 with K2?


> Tom:
>
> >I'm getting a birdy near 28.020MHz with my K2/100.   Is there anything
> >that can be done to eliminate this or move it a few kHz?
>
> Does it go away if the KPA100 is not powered up (e.g. DC removed)? Might
be
> the HV osc (PIN diode blocking voltage osc.) in the KPA.
>
> If so, it can probably be MOVED elsewhere... maybe significantly reduced
as
> well.
>
> Tom   N0SS
>