[Elecraft] Looking for 40m RF amp design for my K2

[Andrew Moore]

I'm looking for designs for an RF amp for my K2.  Can anyone point me to
a design?  I plan to use it for CW only, 40 meters only, and roughly 75
watts output.  Solid state preferred but not required.  I'd like to keep
it external to my K2 so I can keep the K2 in its "QRP" flavor.

Thanks,
--Andrew, NV1B, CFO 963