A5200 SQUELCH AMPLIFIER ALINEMENT, NEW SQUELCH LEVEL.

TM 11-5820-401-34-3/0967-LP-432-3060

A5200 SQUELCH AMPLIFIER ALINEMENT, NEW SQUELCH LEVEL.

5-25.

PURPOSE. This procedure adjusts the receiver sensitivity to the 150-Hz NEW SQUELCH tone.

TEST EQUIPMENT AND MATERIALS

Signal Generator AN/URM-103

Matching Unit CN-901/U

Frequency Counter AN/USM-207

T-Connector UG-274/U

Loudspeaker LS-454/U

Power Supply PP-1104(*)/G

Voltmeter ME-30(*)/U

Test Cable No. 1

TEST SETUP. Connect the equipment as shown in test setup diagram

. Remove R-442/VRC top

INITIAL EQUIPMENT CONTROL SETTINGS. Set equipment controls as indicated in the following

table. When using alternate equipment, inject 20-v rf at 30 MHz, 150-Hz modulation; deviation as

per alinement requirements.

CONTROL AND SWITCH SETTINGS

CONTROL OR SWITCH

EQUIPMENT

POSITION/SETTING

R-442/VRC

POWER

ON-RESET

BAND

MC-TUNE-KC

30.00

VOLUME

Fully clockwise

SQUELCH

NEW ON

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