455 Mc/s telemetry ground equipment

The 24-channel 455 Mc/s telemetry system has been the most widely used system in Great Britain for many years. This paper describes the principles common to all the present types of receiving and recording equipment in use on the ranges. Certain of the equipments are described in greater detail; these include receivers, a sixteen-tube slow-speed recorder and a histogram recorder with data processing facilities. The paper concludes with a description of a comprehensive test set for checking and calibrating telemetry senders.