MIL-HDBK-162A
Volume 1
15 December 1965
Section 1
ITEM NAME: RADAR SET
TYPE: AN/FPN-47
of stable local oscillator (stalo)
video containing range and azimuth information to the
Nominal Power Output:
Indicator Groups. Provisions are also included for
400 w avg power at prf of 1200 pps
processing and remoting beacon video from GFE
390 w avg power at prf of 1170 pps
equipment. The equipment is designed for continuous
380 w avg power at prf of 1140 pps
operation and, except for the antenna, is dual
Peak Power Output: 425 kw at duty factor of 0.001
channeled.
Pulse Repetition Frequency: 1200 pps, 1170 pps, 1140
RELATION TO SIMILAR EQUIPMENT
pps, or 900 pps with respective pulse periods of
None.
833, 855, 877, or 1111 usec
TECHNICAL DESCRIPTION
Modulation (input to magnetron): 25 kv pulse, 0.833
Duty: continuous, unattended
usec wide at 70 pct amplitude point.
Primary Power Requirements: power factor
Receiver
Characteristics:
type,
superhetrodyne,
0.7, three ph (4-wire), 60 cps, 120v
intermediate freq, 30 mc, noise figure, max 4 db
line to neutral, 208v line to line, 50
relative to theoretical source, bandwidth, normal if.
amps per ph, 10.27 kw
2.1 to 2.7 mc, normal video 2mc MTI if. 4 to 5 mc,
Range: 60 naut mi
MTI video 2 mc, sensitivity (below 1 mw), norm min
Antenna Pattern: fan-shaped beam from
of 109 db, MTI min of 107 db.
minus 3 to plus 30 deg in elevation
Antenna Electrical Characteristics:
and 1-1/2 deg in azimuth
VSWR1.4 to 1 at net avg power.
Rate of Scanning: 15 rpm
Power Handling 1250 kw peak at 0.002 duty cycle.
Frequency Range: 2700 to 2900 mc, con-
Power Gain min of 34 db over isotropic source.
tinuously var.
Frequency Control: automatic freq control
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENT
QTY
HEIGHT
WIDTH
DEPTH
UNIT WT.
(Inches)
(Inches)
(Inches)
(Pounds)
Antenna Assembly FA-4707
1
2700
Transmitter Assembly FA-4921
2
990
Performance Monitor FA-4916
2
760
Receiver Assembly FA-4914
2
520
Transmitter Building Control
1
260
Assembly FA-4777
Equipment Control Assembly
1
320
FA-4965
Common Equipment Assembly
1
330
FA-4954
Microwave Link Adapter
1
250
Assembly
Waveguide Switch FA-4716
1
Waveguide Assembly W1300
1
Series
Transmitter Building Main
1
Power Control Unit FA-4713
Delay Line Ovens AC Control
1
Box FA-4714
Monitor Plan Position
1
Indicator FA-4918
Dummy Delay Line FA-4752
1
Modulator Dummy Load FA-4720
1
Microwave Link Adapter
1
Assembly
Transmitter Building Cable
1
Junction Box FA-4901
Transmitter Building Control
1
Assembly FA-4777
AC Voltage Regulators 3 kva
6
Three Phase AC Regulator
1
Control Unit FA-4930
AN/FPN-47: 2
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