Volume 1
MIL-HDBK-162A
Section 3
15 December 1965
ITEM NAME: RADAR SET
TYPE: AN/BPS-4
3% of indicated range plus 200 yds
The AN/BPS-4 provides the necessary trigger pulses,
Range and Bearing: Up to 30, 000 yds at
altitudes up to 10, 000 ft.
information to present its radar display on the Radar Set
Type of Receiver: Superheterodyne, employ-
AN/BPS-1 or Model SS-1.
ing automatic frequency control and anti-
The antenna feed system on Radar Set AN/BPS-4 is
jamming protection.
capable of operating with Radar Recognition Set
Receiver Output: Provides video outputs
AN/UPX-( ). A synchronizing output is provided for
for the VK indicating units and Range
triggering the radar recognition equipment. It is also
Indicator IP-183/BPS-4; a 400 cps audio
designed to provide one speed and 36 speed azimuth
output is supplied when employed for
bearing, video, and synchronizing signals, to two Navy
keyed MCW communication; a 60 mc output
Model VK series repeaters.
is supplied for auxiliary equipment.
Peak Power Output: 500 kw
RELATION TO SIMILAR EQUIPMENT
Pulse Width: 1 usec
None.
Pulse Repetition Rate: 400 pps plus or
minus 5%
TECHNICAL DESCRIPTION
Intermediate Frequency: 60 mc
Antenna
Operating Frequency Range: 3400 to 3700
Beam Width
mc
Horizontal: 5.3 deg
Power Source Required: 115v plus or minus
Vertical: 50 deg (cosecant squared
5%, 60 cps plus or minus 2 cycles, 1 ph;
type pattern)
the primary power source should have a
Feed: One 50 ohm coaxial, one wave-
max capacity of 5 kva for proper opera-
guide.
tion exclusive of the antenna drive
Type: Parabolic
motor.
Polarization: Vertical one frequency,
horizontal second frequency.
INSTALLATION CONSIDERATIONS
Gain: 23.5 db (approx)
Related Equipment: (Required but not
Scanning: Vertical beam width of 60 deg
Supplied) (1) Torque Tube Mast, 2
and continuously through an azimuth
to 4 PPI Repeaters VK series, (1)
angle of 360 deg
Inherent Bearing Accuracy: plus or minus
2 Mod 1 or equivalent, (1) Connection
1% in azimuth
Box, (1) Line Disconnect Switch NT-
Inherent Range Accuracy: plus or minus
24899 or equivalent, Cables and Wave-
guides as required. (1) Range Indi-
cator IP-183/BPS as required by
direction from the Bureau of Ships.
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENT
QTY
HEIGHT
WIDTH
DEPTH
UNIT WT.
(Inches)
(Inches)
(Inches)
(Pounds)
Radar Receiver-Transmitter
1
38-15/16
21-3/8
18-29/32
303
RT-256/BPS-4
Radar Set Control C-1028/BPS-4
1
31-3/4
21-3/16
11-5/8
122
Radar Modulator MD-166/BPS-4
1
38-15/16
20-1/4
17-13/32
380
Antenna Base AB-251/BPS-4
1
28
24-3/16
18-3/4
675
Antenna AS-594/BPS-4
1
48-5/16
37-21/32
26-29/32
300
Power Supply PP-776/BPS-4
1
23-11/16
18-1/2
16-3/4
240
Power Supply PP-777/BPS-4
1
23-11/16
18-1/2
16-3/4
154
Power Supply PP-778/BPS-4
1
23-11/16
18-1/2
16-3/4
134
Antenna Control C-1026/BPS-4
1
4-3/8
4
3-1/2
3
Receiver Control C-1072/BPS-4
1
5-1/2
4
2-9/16
2
AN/BPS-4: 2
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