The EDDYSTONE Model 940 is a general purpose communications receiver covering the frequency band 480 kc/s to 30 Mc/s in five switched ranges. A single conversion circuit is employed and the receiver is suitable for AM, CW and SSB reception. A built-in mains pack provides for direct operation from all standard AC supplies. Audio outputs are available for connection to an external loudspeaker, telephones and remote lines. The output stage employs a push-pull circuit and is capable of excellent quality. Circuit arrangements are such that the speaker output is automatically interrupted when telephones are in use but the line output is maintained under all conditions of operation. Audio input terminals arc fitted at the rear so that the audio section of the receiver may be used alone. Three positions of IF selectivity are provided one of which involves the use of a single crystal filter having a phasing adjustment which takes the form of a panel control. Other features of the Model 940 include a built-in meter for measurement of relative carrier level or for use as a tuning indicator, a noise limiter for AM reception and an extremely efficient AGC system. The Local and Beat Oscillators are operated from a stabilised supply. Two RF Amplifiers are used, the first stage being a double-triode cascode arrangement. Provision is made for control of an external relay which may operate an associated transmitter from the Standby switch on the front panel. Rugged construction and high quality components are employed throughout, the receiver is of a most convenient size, can be adapted for rack-mounting and is attractively finished with modern styling. The strong steel cabinet and chromium plated panel handles give adequate protection against rough usage. Continuous operation is possible in all areas under extreme climatic conditions.