|DATE OF DESIGN||1923|
|FREQUENCY RANGE||2300 -4200 kc/s|
|POWER SUPPLY||1 kW Double Generator|
|TYPE OF SET||VALVE|
|WAVEFORM||RT and ICW|
|METHOD OF PRODUCING OSCILLATIONS||SELF|
|WHERE USED/FITTED||Type 83 has a range of 20 miles. It is a low power valve set
designed for use either as a W/T or R/T transmitter. The complete set,
with the exception of the generator and automatic starter, is secured to
a metal framework which also supports an inclined board on which the
receiving instruments are mounted. 'Sorbo' rubber pads are used to support the
transmitter as a protection against vibration and shock of gun-fire.
Click here for an OED [Oxford English Dictionary] definition of what 'sorbo'
This is one of the several sets which had a 'listen through' facility when using ICW allowing ships to "break-in" on transmissions.
This set is capable of being keyed [ICW] from the main W/T office, or for R/T, to have two microphones connected, one in the W/T Office and one on the bridge of the ship. The W/T operator has a control box on which is a switch marked "RC-OP" meaning 'Remote Control-Operator'. Further, each position has a R/T-Local switch. If, say, the bridge wanted to talk on the set, the W/T operator would select 'RC' and the bridge operator would set his switch to R/T thereby denying the W/T operator the use of the set. Both position can talk to each other over a battery dry-pack powered internal circuit, by each position switching to their 'local' modes.
|ASSOCIATED WAVEMETER||1492B or G9|
Click for the full set schematic 83 overall system diagram.pdf
and here to see the Equivalent circuits for R/T and