TRANSMITTERS & TRANSCEIVERS

Type 622 Transmitter

DATE OF DESIGN

FREQUENCY RANGE

1.6 to 10 MHz in two ranges: 1.6 to 4 MHz and 4 to 10 MHz (8 to 10 MHz to be used only in emergency).

POWER SUPPLIES

Derived from a 12 V battery driving a rotary transformer to provide HT at 300 V. The valve heaters are connected in series parallel to the 12 V supply.

RANGE IN MILES.

TYPE OF SET (VALVES USED)

WAVEFORM

ASSOCIATED WAVEMETER.

METHOD OF PRODUCING OSCILLATIONS

WHERE USED/FITTED

A short range low power tropicalised portable transmitter-receiver (Army Wireless Set No 62) for voice and cw communication.

FURTHER READING

PHOTOS, SCHEMATICS, DOCUMENTS

Photographs and Schematics

NOTES.

BR 1747 E.M.E.R. Telcon F510, F512, and F514.