Kenwood specifies transmit duty cycle time, The TS-940S is guaranteed to operate at full power output for periods exceeding Glow with superlatives, and the field -proven performance shows that the TS-940S is 'The Number One Rated HF Transceiver!' Pushing the state of the art in HF transceiver design and construction, no one has been able to match the TS-940S in performance, value and reliability. TS-940S-the standard of performance by which all other transceivers are judged. The 'AT' after the S is for Antenna Tuner.
The Kenwood TS-940S is the same as the TS-940SAT except without the automatic antenna tuner. At the time Kenwood considered it their top of the line competition class HF radio until it was later surpassed by their newer model TS950DX. The Kenwood TS-940S/AT was manufactured at and after 1986.
