[Elecraft] KPA500

[Joe Subich, W4TV]

Joe, 

You missed the news ... just a push-pull 2N2222 pair with 
liquid nitrogen cooling. 

73, 

   ... Joe, W4TV 
 



> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] 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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