CONTROLS AND INDICATORS-continued - TM-11-5820-670-120022

TM 11-5820-670-12

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CONTROLS AND INDICATORS. (CONT)

FUNCTION

CONTROL OR INDICATOR

KEY

Four-position switch. OFF position turns off primary

Mode control switch

power to radio set. T/R position applies power and al-

lows normal two-way voice communication. RETRAN po-

sition applies power and allows radio set to operate as

part of a two-way relay station. HOME position applies

power and allows radio set to operate as a homing signal

receiver.

Three position switch. DIS position disables all squelch

SQUELCH mode selector

circuits. CARR position sets squelch circuit to operate

switch

normally in presence of any carrier. TONE position

opens (unsquelches) only at selected signals (signals

containing a 150 Hz tone modulation).

Adjusts audio output level of the radio set.

VOL (volume control)

Selects and displays the tens MHz digit from 3 to 7 of the

Tens MHz frequency

operating frequency range.

selector

Selects and displays the units MHz digit from 0 to 9 of the

Units MHz frequency

operating frequency range. (When tens MHz frequency

selector

selector is set to 7, this units selector only has a

range of 0 to 5.)

Tenths MHz frequency

Selects and displays the tenths MHz digit from 0 to 9 of the

operating frequency range.

selector

Selects and displays the hundreds MHz digit, either 0

Hundreds MHz frequency

or 5, of the operating frequency range.

selector

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