KWS-1 HF Transmitter – KWS-1 Amateur Radio
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front The KWS-1 was the first Collins SSB transmitter. It was normally paired with the 75A-4 receiver for a complete HF SSB station. The KWS-1 and 75A-4 was used in three test flights aboard a SAC C-97 to evaluate the superiority of SSB for command and control of the nation’s bomber fleet. It was sold to both amateur radio operators as well as the military.