> "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 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html

