DATE OF DESIGN

FREQUENCY RANGE

POWER SUPPLIES

Radio Transmitter Unit - Mallory Type battery rated at 120 volt 150 mA Light-pulser Unit - 4 x 3 volt dry batteries.

RANGE IN MILES.

TYPE OF SET (VALVES USED)

WAVEFORM

ASSOCIATED WAVEMETER.

METHOD OF PRODUCING OSCILLATIONS

WHERE USED/FITTED

Fitted into the existing Submarine Indicator Buoys to enable them to transmit radio distress signals as well as the flashing light signal.

FURTHER READING

PHOTOS, SCHEMATICS, DOCUMENTS

Details of Type 609

NOTES.

BR 2182 (1958)