Guys. The KAT4 is installed inside the K4 transceiver.  It could not be used 
with an external amplifier.  The matching unit for the KPA500 must go between 
the Amp output and the antenna. 

Sent from my iPhone
...nr4c. bill


> On Apr 20, 2020, at 9:55 AM, Charles Sells <char...@sellsfamily.net> wrote:
> 
> Dave
> 
> It would be really nice if it would handle the 500 watts that the KPA500 puts 
> out.
> 
> That might be wishful thinking.
> 
> 73
> Charles
> W4PPP
> 
> From: David Bunte <dpbu...@gmail.com>
> Date: Monday, April 20, 2020 at 9:03 AM
> To: Charles Sells <char...@sellsfamily.net>
> Cc: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net>
> Subject: Re: [Elecraft] KAT4
> 
> Charles -
> 
> I don't "know" what the power handling capabilities are, but think I can 
> safely assume that if it is in the K4 it can handle the power of the K4. I 
> trust that Wayne, Eric, or someone else who "knows" the answer will chime in 
> when they are able.
> 
> 73 de Dave - K9FN
> 
> On Mon, Apr 20, 2020 at 8:25 AM Charles Sells 
> <char...@sellsfamily.net<mailto:char...@sellsfamily.net>> wrote:
> I can see from the literature that is on the website that the KAT4 ATU will 
> handle a 10:1 matching range but don’t see what the power handling 
> capabilities are.
> 
> Anyone know?
> 
> 73
> Charles
> W4PPP
> 
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