[Amps] Solid state amp high SWR distortion

[Paul Christensen]

>"The Elecraft K3 is the first rig that I'm aware of that did this, and
several SDRs (Flex, Anan) have followed suit. The early Flex rigs were
pretty nasty, including the first 6500/6700 that ARRL tested. Soon after,
this was greatly improved with new firmware that implemented the shaped
keying waveform."

Certainly one of the first although I believe Doug Smith, KF6DX is credited
with being the first to implement digitally-derived, raised-cosine envelope
shaping and filtering in the Ten Tec Orion I.

Paul, W9AC