An edition of Radio equipment for medical and biological telemetry devices (1968)

Radio equipment for medical and biological telemetry devices

performance specification no. W. 6802 for Class I devices in the frequency range 300 kHz to 30 MHz and nos. W. 6803 and W. 6804 for Class II and Class III devices in the frequency band 102.2-102.4 MHz

By Great Britain. Post Office.