Production Year 1969 at $895.00 with out power supply
The Hallicrafters Cyclone III SR-400a pictured here is a 20 tube super-heterodyne double conversion transceiver.The power input for the Hallicrafters SR-400A Cyclone III Transceiver is 550 watts P.E.P. SSB and 350 watts in CW. That translates to a SSB output power of 275 watts and 175 watts in CW. To help the transceiver cope with all the heat produced by this power, the factory has installed a cooling fan on the back of the transceiver. The driver tube is a 12BY7 and the finals are a pair of 6KD6 tubes.
The coverage is from 10 to 80 meters in either SSB or CW. The other features of this transceiver include VOX, PTT, AALC, a product detector, 1650kHz crystal lattice filter, CW side tone, crystal calibrator, combination RF output and S-meter, noise blanker and a R.I.T. with 3kHz offset.
The buyer had a choice of separate power supplies. The PS-500-AC (priced at $119.95) for 117 volt AC operation and/or the PS-500-DC (priced at $159.95) for 12 volt DC operation such as going mobile in a auto or boat. Some other options included the HA-20 external VFO for split operations and the MR-400A mobile mounting kit(priced at $49.95).
Hallicrafters also produced the model SR-400 which had a lower output power of 200 watts SSB and CW. it also had no phone patch connection in the back and the final tubes(6HF5) were different. But make no mistake about it, either of these transceiver would make a worthy addition to the ham shack.