You missed the news ... just a push-pull 2N2222 pair with
liquid nitrogen cooling.
... Joe, W4TV
> -----Original Message-----
> From:
[hidden email]
> [mailto:
[hidden email]] On Behalf Of Joe Planisky
> Sent: Friday, April 16, 2010 7:05 PM
> To: Elecraft Elecraft
> Subject: Re: [Elecraft] KPA500
>
>
> Nah. It'll be 500 2N2222's. Wayne had a bunch left over from some
> QRP projects and had to find a way to get rid of them. :-)
>
> 33-1/3
> ------
> Joe KB8AP
>
>
>
> On Apr 16, 2010, at 2:28 PM, Paul Christensen wrote:
>
> >> "I would also think it will be built around MRF-150 FET's?"
> >
> > Four years ago, the prototype KPA800 used eight APT ARF 463
> > transistors
> > (four per RF board). Each plug-in board would be field
> > serviceable. The
> > prototype KPA1500 in effect doubled the number of boards and
> > transistors.
> >
> > ...
>
> > Paul, W9AC
> >
>
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