Fw: 10m Birdie

[Russ-12]

I never operate 10M but just checked my K2 with the KPA100 and found the
same thing with a strong birdie at around 28262.  The weird thing is that
when I turned off the KPA100 (reducing power below 10W) the birdie at 28262
shifted up about 1kc and the birdie at 28019 shifted down about 500c.

Russ, N3CO
K2 #4016

----- Original Message -----
From: <[hidden email]>
To: <[hidden email]>
Sent: Sunday, January 02, 2005 11:19 AM
Subject: [Elecraft] 10m Birdie

> "----In order to get a match at 28019 kHz as has been reported,=
>  the KPA100
> oscillator has to be shifted to 18434.1 ----"
>
> Hi also have the 28029 birdie.  I've also got the much stronger=
>  28262
> birdie.
>
> I've wanted to eliminate this for some time since there a lot of=
>  cw activity
> between 28025 and 28025.  My KPA100 is installed on the K2.  The=
>  birdie
> produces about 1 s unit bar with the pre-amp on.  Based on Sverre=
>  comments,
> how do I eliminate the birdie?  Is it merely the freq of the 18=
>  MHz
> oscillator.
>
> Frank, W4FMS
>
>
>
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>
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--
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Checked by AVG Anti-Virus.
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[Tom Althoff]

Another wierd behavior of the 28020 birdy is that is tunes the opposite of a
normal cw signal and changes pitch in large steps.  I wonder if it is a
harmonic of the HV oscillator in the KPA-100 beating with something related
to the main tuning oscillator?

----- Original Message -----
From: "Russ Tobolic" <[hidden email]>
To: <[hidden email]>
Sent: Monday, January 03, 2005 10:24 PM
Subject: Fw: [Elecraft] 10m Birdie


> I never operate 10M but just checked my K2 with the KPA100 and found the
> same thing with a strong birdie at around 28262.  The weird thing is that
> when I turned off the KPA100 (reducing power below 10W) the birdie at
28262

> shifted up about 1kc and the birdie at 28019 shifted down about 500c.
>
> Russ, N3CO
> K2 #4016
>
> ----- Original Message -----
> From: <[hidden email]>
> To: <[hidden email]>
> Sent: Sunday, January 02, 2005 11:19 AM
> Subject: [Elecraft] 10m Birdie
>
>
> > "----In order to get a match at 28019 kHz as has been reported,=
> >  the KPA100
> > oscillator has to be shifted to 18434.1 ----"
> >
> > Hi also have the 28029 birdie.  I've also got the much stronger=
> >  28262
> > birdie.
> >
> > I've wanted to eliminate this for some time since there a lot of=
> >  cw activity
> > between 28025 and 28025.  My KPA100 is installed on the K2.  The=
> >  birdie
> > produces about 1 s unit bar with the pre-amp on.  Based on Sverre=
> >  comments,
> > how do I eliminate the birdie?  Is it merely the freq of the 18=
> >  MHz
> > oscillator.
> >
> > Frank, W4FMS
> >
> >
> >
> > _______________________________________________
> > Elecraft mailing list
> > Post to: [hidden email]
> > You must be a subscriber to post to the list.
> > Subscriber Info (Addr. Change, sub, unsub etc.):
> >  http://mailman.qth.net/mailman/listinfo/elecraft
> >
> > Help: http://mailman.qth.net/subscribers.htm
> > Elecraft web page: http://www.elecraft.com
> >
> >
> >
> > --
> > No virus found in this incoming message.
> > Checked by AVG Anti-Virus.
> > Version: 7.0.298 / Virus Database: 265.6.7 - Release Date: 12/30/04
> >
> >
>
>
> --
> No virus found in this outgoing message.
> Checked by AVG Anti-Virus.
> Version: 7.0.298 / Virus Database: 265.6.7 - Release Date: 12/30/04
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com

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