Chapter 3. OPERATION - TM-11-5821-277-200023

TM 11-5821-277-20

CHAPTER 3

OPERATION

cockpit in a position where it is convenient to

3 - 1 . General

both the pilot and the copilot. A switch, meter,

and two jacks (primarily for use by maintenance

Except for certain controls unique to the air-

craft, all controls necessary for operation of the

personnel) are on the front panel of the trans-

ceiver. The operating controls and their func-

radio set are on the front panel of the control

tions are described in a and b below.

unit. The control unit is normally located in the

a. Control Unit (fig. 3-1).

Control or indicator

OFF-PWR switch (concentric with MHz turning control).

VOL control (concentric with kHz tuning control) ------

MHz tuning control (Ieft side) ------------------------

kHz tuning control (right side) ------------------------

VHF COMM frequency indicator --------------------

COMM TEST pushbutton switch -----------------------------

Illumination of controls.

Panel lights (3) - -------------------------------------------------

b. Transceiver (fig. 9-2).

Control indicator or jack

Time totalizing meter

Monitors total time transceiver is in operation.

Monitor

meter

---------------------------------------

Meter selector switch --------------------------------

(11-position)

0FF -------------------------------Open input circuit to moni-

tor meter.

Transceiver primary power

LINE V

100 V FS.

input to input of transient

suppressor circuit (Meter

calibrated to read 100 volts

fullscale)

REG SUP

Output of 20-volt dc regu-

lator circuit (meter cali-

100 V FS.

brated to read 100 volts

full-scale.)

A G C - - - - - - - - - - - - - - - - - - - - - - - - - - - Connection of 20-volt dc

source and age bus.

(Meter uncalibrated, fur-

nishes indication of agc ac-

tion.)

l Not used on all units,

Changes 1

3-1