Volume 1
MIL-HDBK-162A
Section 1
15 December 1965
ITEM NAME: RADAR SET
TYPE: AN/FPS-4
provisions for an additional RHI
RELATION TO SIMILAR EQUIPMENT
Indicator Range: 60 or 120 mi
Radar Set AN/MPS-8 is the mobile version, and
Range Marks: 5-mi intervals (60-mi posi-
Radar Set AN/TPS-1OD is the transportable version of
tion), 10-mi intervals (120-mi position)
Radar Set AN/FPS-4. The AN/MPS-8, AN/TPS-1OD
Power Requirements: 120-208v ac, 60 cps,
and AN/FPS-4 are functionally interchangeable.
3-ph, 4-wire, 12 kw
INSTALLATION CONSIDERATIONS
TECHNICAL DESCRIPTION
Siting: The set is capable of detecting targets at low
Frequency: 9230 to 9404 mc
angles. In order to make the best use of the low-
Power Output: 250 kw, peak
angle coverage, and to eliminate blind spots
RF Power Source: Type JAN-6002 magnetron
caused by peaks, the radar set should be located at
Pulse Width: 0.5 or 2.0 usec
the highest practicable point.
Pulse Repetition Rate: 539 pps
Range: 120 mi
Mounting:
Antenna Group is installed in either
Vertical Coverage: -5000 to plus 60,000
Temperate Tower AB-302/FPS-4 or Arctic Tower
ft, -2 to plus 23 deg angular
AB-343/FPS-4. Indicator and control group are
Horizontal Coverage: 360 deg
installed in operations building. Motor-generator is
Antenna Speed of Rotation: 1/3 rpm,
installed in power building.
automatic; O to 6 rpm, manual
Antenna Vertical Scanning Rate: 60 cpm,
Cabling Requirements:
No specific order need be
automatic; 30 cpm, manual
followed for connecting the assault and tower
Resolution: 0.7 mi in range (120-mi posi-
mounted radar set cables. Each cable connector
tion) or 0.43 mi in range (60-mi posi-
has an associated marker whose numbers
tion); 2.3 deg in azimuth; 0.8 deg in
correspond to the number of the mating connector
elevation
on the unit to which it attaches.
System Accuracy:
Be careful when installing cabling near rotating
Range - 1 mi at 100 mi, absolute; 0.5
machinery. Make sure there is no danger of cables
mi at 100 mi, relative
or connector caps being caught.
Azimuth - 2 deg, absolute; 0.5 deg,
relative
Related Equipments: The AN/FPS-8 is the
AN/FPS-
Elevation - plus 1000 ft, absolute;
4's associated search radar set.
plus 500 ft, relative
Beam Width:
Horizontal - 2.05 deg
Vertical - 0.755 deg
Receiver Bandwidth: 3 mc
IF. Frequency: 30 mc
Indicator Type and Quantity: One RHI and
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENT
QTY
HEIGHT
WIDTH
DEPTH
UNIT WT.
(Inches)
(Inches)
(Inches)
Radar Receiver-Transmitter
1
27-1/8
27-5/8
32-1/2
215
RT-208/TPS-1OD
Power Supply PP-636/TPS-1OD
1
22-1/4
23-1/2
21-3/4
85
Radar Modulator MD-140/TPS-1OD
1
22
24
43-1/4
185
Power Supply PP-635/TPS-1OD
1
22
23-3/4
30-3/4
210
Electronic Control Amplifier
1
32-3/4
35
49-1/2
450
AM-493/TPS-1OD
Manifold Dehydrator Type B-1
1
19-3/4
28
22
230
HD-147/TPS-1OD
Antenna Group OA-375/TPS-1OD
1
157
63-1/4
(radius)
Antenna Pedestal AB-226/TPS-1OD
1
Control Indicator C-835/TPS-1OD
1
27-1/4
22
44
200
AN/FPS-4: 2
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