Volume 1
MIL-HDBK-162A
Section 1
15 December 1965
AN/MPQ-4A
quired for operation of AN/MPQ-4A)
FUNCTIONAL DESCRIPTION
Type of Presentation: One 5-1/2 in B-scope
Duty Cycle: 0.00215
Radar Set AN/MPQ-4A is a mobile, intercept-type
Pulse Repetition Rate: 8, 600 pps
(non-tracking) set designed primarily to locate hostile
Pulse Width: 0.25 sec
mortars and secondarily to adjust counter-measure (low-
velocity artillery) fire.
Radar Set AN/MPQ-4A
Angular Resolution: Angle, 1 deg; range, 50m
determines the origin or impact points of mortar shells
Horizontal Beam Width: 17.8 mils
by observing them in flight.
Vertical Beam Width: 14.25 mils
Azimuth Coverage: 450-mil fixed-sector scan-
ning; antenna will fix through 6, 400 mils
Accuracy of Maximum Range: 10m
RELATION TO SIMILAR EQUIPMENT
None.
INSTALLATION CONSIDERATIONS
TECHNICAL DESCRIPTION
Siting: A reasonably level spot, free of obstruc-
tions
Frequency: 16, 000 *160 mc
Mounting: Major units are normally mounted on
Range, Max: 10, 000m
Electronic Equipment Trailer V-130/MPQ-
Range, Min: 170m
4A
Peak Power Output: 50 kw (min)
Cabling Requirements:
Operating Voltages and Power Requirements:
Related Equipment: Radar Set AN/MPQ-4A is
120/208v, 400cps, wye connected, 3-ph, 5 kw
designed to operate with PU-304A/MPQ-4 or
(PU-304A/MPQ-4 or PU-304B/MPQ-4 is re-
PU-304B/MPQ-4.
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENT
QTY
HEIGHT
WIDTH
DEPTH
UNIT WT.
(Inches)
(Inches)
(Inches)
(Pounds)
Antenna Group OA-1258/MPQ-4A
1
66. 5
90.53
66
1938
Control-Indicator Group
1
28. 42
53.12
31.34
571
OA- 1256/MPQ-4A
Receiver-Transmitter Group
1
29.5
49.32
30.28
560
OA- 1257/MPQ-4A
Trailer, Electronic Equipment
1
36.75
96
192
1858
V-130/MPQ-4A
REFERENCE DATA AND LITERATURE
TM 11-5840-208-30
TM 11-5840-208-45
Technical Manuals:
Specification:
TM 11-5840-208-10
MIL-R- 11906B(SigC)
TM 11-5840-208-20P
AN/MPQ-4A: 2
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