TRANSMITTERS & TRANSCEIVERS

Type 57 Transmitter

DATE OF DESIGN

FREQUENCY RANGE

3 - 20 Mc/s.

POWER SUPPLIES

57DM/DMR - 400 volts 50 c/s 3 phase 12 kW from bus bars of the C.W.S. distribution board. 57CM/CMR - 400 volts 50c/s 3 phase 12 kW from bus bars of the Board 2BE supply from 12 kW Motor Alternators.

POWER TO FINAL STAGE.

TYPE OF SET (VALVES USED)

WAVEFORM

57CM/DM - CW and MCW. 57CMR/DMR - CW, MCW and Voice.

ASSOCIATED WAVEMETER

METHOD OF PRODUCING OSCILLATIONS

WHERE USED/FITTED

A high power H.F. A.M. transmitter fitted as a main transmitter in capital ships and cruisers. Types 57CM/CMR are fitted with the C.C.S. system, Types 57DM/DMR in ships with the C.W.S. system. Associated with large or heavy ships.
57 - Cruisers Australia and Canberra.
57C(CCS)/57CR(CCS+R/T) earmarked for Belfast, Courageous, Edinburgh, Fiji, Furious, Greenwich, Kenya, London, Maidstone, Mauritius, Nevass, Nigeria, Queen Elizabeth, Renown, Trinidad and Valiant.
57D(CWS), 57DR(CWS+R/T), 57X(1st experimental) - Duke of York, Adamant, Ark Royal, Beatty, Ceylon, Charybdis, Cleopatra, Formidable, Gambia, Hecla, Hood, Illustrious, Implacable, Indomitable, Jamaica, Jellicoe, King George V, Lion, Nelson, Prince of Wales, Rodney, Scylla, Temeraire, Tyne, Uganda, Unicorn, Victorious.

FURTHER READING

IMAGES, PHOTOS, DOCUMENTS, SCHEMATICS ETC.

Photographs, Schematics and Details of Type 55

NOTES.

BR 1623