[Elecraft] time for KPA1500 - but why "no tubes?"

[Ignacy]

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

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