A5200 SQUELCH AMPLIFIER ALINEMENT, OLD SQUELCH LEVEL

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

A5200 SQUELCH AMPLIFIER ALINEMENT, OLD SQUELCH LEVEL.

3-27.

PURPOSE. This procedure adjusts the receiver sensitivity to the OLD SQUELCH signals which

include internal noise and the received carrier.

TEST EQUIPMENT AND MATERIALS

Matching Unit CN-901/U

Signal Generator AN/URM-103

T-Connector UG-274/U

Frequency Counter AN/USM-207

Loudspeaker LS-454/U

Power Supply PP-1104(*)/G

Voltmeter ME-30(*)/U

Signal Generator AN/URM-127

Maintenance Kit MK-1978P/VRC

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

. Remove R-442/VRC top

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

using alternate equipment, inject 20-v rf at 42 MHz, 7.3-kHz modulation, and deviation as per

alinement requirements.

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