AN~USQ-42

Radio Frequency Monitor Set AN/USQ-42 is a manpack or vehicular, portable, frequency modulated (fm) receiver. It is used to monitor signals from as many as 27 remote sensors on any one of 31 channels. When a sensor transmission is received, the AN/USQ-42 displays the remote sensor identity number on a front panel display and provides a headphone output of the received audio signal.

Technical Characteristics

Number of channels

31

Number of sensor codes per channel.

1 to 27

Type of reception

Voice and tone-modulated identity codes (fm)

Types of antennas

Manpack Operation - Antenna AS-2280/USQ-42

Stationary Operation - Base, Antenna AB-1093/USQ-42

Vehicular Operation - Vehicular Antenna for M161 truck mounting

Helicopter Operation - Aircraft Antenna AT-209/ARR-26 for UH-1D helicopter mounting.

Frequencies

Channel Frequencies
Channel Number	Frequency (mHz)
00	161.500
01	162.250
02	163.000
03	163.750
04	164.500
05	165.250
06	166.000
07	166.750
08	167.500
09	168.250
10	169.000
11	169.750
12	170.500
13	171.250
14	172.000
15	172.750
16	173.500
17	162.625
18	163.375
19	164.125
20	164.875
21	165.625
22	166.375
23	167.125
24	167.875
25	168.625
26	169.375
27	170.125
28	170.875
29	171.625
30	172.375
31	173.125
32	173.875
33	174.625
34	175.375
35	161.125
36	161.875
37	174.250
38	175.000
39	175.750

Reference Files

TM 11-5840-339-12

OPERATOR AND ORGANIZATIONAL MAINTENANCE MANUAL

RADIO FREQUENCY MONITOR SET

AN/USQ-42

April 1968

TM 11-5840-339-34

DS AND GS MAINTENANCE MANUAL

RADIO FREQUENCY MONITOR SETS

AN/USQ-42

(LIMITED COVERAGE)

May 1968

TM 11-5840-339-35

DS, GS AND DEPOT MAINTENANCE MANUAL

RADIO FREQUENCY MONITOR SETS

AN/USQ-42

AN/USQ-42A

AN/USQ-42B

June 1970