Single Sideband in the Amateur Service

Single-sideband techniques are in wide use in the amateur hf bands allotted for radiotelephony, and the number of amateur stations equipped for SSB is growing rapidly. This paper touches briefly on the historical background of SSB in the amateur service, and outlines the operating characteristics that have proved to be most advantageous in meeting the special requirements of amateur communication. The broad categories of equipment in current use are described, and some of the problems peculiar to a service in which several modes of radiotelephony are used simultaneously in a frequency band, without channelization, are discussed.