[Elecraft] Birdy on 28020 with K2?

[Tom Althoff]

Correction...dropping the power below 10W shifts the birdy about 300Hz it
does not "kill the birdy" (no birdys were harmed during these tests).

----- Original Message ----- 
From: "Tom Althoff" <althoff at verizon.net>
To: "Elecraft" <elecraft at mailman.qth.net>
Sent: Sunday, January 02, 2005 3:50 PM
Subject: Re: [Elecraft] Birdy on 28020 with K2?


> 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
> >
>