Table 3-1. Receiver Control Operator Controls and Instruments

TM 11-5865-215-13

Table 3-1.

Receiver Control Operator Controls and Instruments

Control or instrument

Function

-------- --. -- -- -- --.----..----------

Allows monitoring of receiver audio.

PHONES

(connector J1)

VOLUME

Controls audio out-put level.

MIN/MAX

(potentiometer R5)

MGC*

Allows the receiver control operator to control gain

MIN/MAX

of receiver IF stages,

(potentiometer R2)

CLARIFIER*

Provides fine tuning resolution of 100 Hz when receiver

MIN/MAX

control is in single sideband (ssb) operation.

(potentiometer Rl)

RECEIVER FUNCTIONS

keyboard

Provides a noise threshold (squelch) level which the

SQL

received signal must exceed to provide a video and

(S1)

audio output. In off position, all received audio

(and noise) is output 6 by the receiver

Provides automatic gain control to prevent a strong

AGC

signal from overdriving the IF stages of the receiver.

(S2)

Allows the IF stage gain of the receiver to be manu-

MGC

ally controlled by MGC.

(S3)

LMGC

Allows limited manual control of receiver IF gain

using MGC control (Age function takes over when re-

(S4)

ceived signal strength is excessive).

Turns on internal receiver test signal for intercept

TEST TONE*

subsystem BITE test

(S5)

8 KHZ BW

Sets receiver bandwidth at 8 kHz.

(S6)

Sets receiver bandwidth at 30 kHz.

30 KHZ BW

(S7)

Sets receiver bandwidth at 50 kHz.

50 KHZ BW

(S8)

*Momentary switch operation (operates only while key is pressed).

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