For CW, this might be easy. A single MRFE6VP61K25H is used now commercially for 2m: 2 W in 1 KW out. This is key down not pulse mode; see http://www.w6pql.com/parts_i_can_provide.htm
Since W6PQL offers it for sale, he must have done lots of testing and determined good reliability. In CW, KPA500 with such a device perhaps could provide 800-900W due to increased efficiency (70 vs 45%). Two such modified KPA500 would easily make 1.5 KW on CW. Also can be driven by K3/10. SSB would be a different question. But Elecraft is innovative. Why not class B be with forward correction.... Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com/time-for-KPA1500-but-why-no-tubes-tp7303191p7305113.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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
