[Elecraft] KPA500

[juergen]

Hi Joe

Whatever devices  it uses lets hope that the IMD performance is above average. The last  thing we need is another expensive amplifier that is no better than the average  cheap CB amp. 

What devices does the KPA500 uses?

John
--- On Fri, 4/16/10, Joe Subich, W4TV <lists at subich.com> wrote:

> From: Joe Subich, W4TV <lists at subich.com>
> Subject: Re: [Elecraft] KPA500
> To: "'Joe Planisky'" <jplan at jeffnet.org>, "'Elecraft Elecraft'" <elecraft at mailman.qth.net>
> Date: Friday, April 16, 2010, 10:06 PM
> 
> 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
> > >
> > 
> >
> ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Elecraft at mailman.qth.net
> > 
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> > 
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>