KPA500

Posted by P.B. Christensen on Apr 16, 2010; 9:28pm
URL: http://elecraft.85.s1.nabble.com/KPA500-tp4915286.html

> "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.

http://www.n6ie.com/Elecraft.html

I like "bolt-on" high-power transistors that use a small PC board slightly
larger than the transistor for the soldered leads, then that PC board bolts
down (e.g., using #10 machine screws) to the main RF board.  If a transistor
needs replacement, one simply unbolts the small PCB from the main board
without inflicting heat/shop tool damage onto the main board.

Paul, W9AC

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