MIL-HDBK-162A
Volume 1
15 December 1965
Section 2
DATE: 1 July 1964
ITEM NAME: RADAR SET
COGNIZANT SERVICE: USN
TYPE: AN/APQ-35, -35A
FEDERAL STOCK NUMBER:
USA
USN
USAF
USMC
STATUS OR TYPE CLASSIFICATION
Mfg(s) Name or Code Number:
Illustration Not Available
High Power Current - 2,660w
FUNCTIONAL DESCRIPTION
Low Power Current - 1,708w
Radar Set AN/APQ-35, -35A is a night intruder
AN/APS-21, -21A
system that consists of: Radar Sets AN/APS-21 and
Ambient Temperature Operation:
AN/APS-21A, airborne long range search and intercept
-55 to +55 deg C
radar; Radar Sets AN/APG-26 and AN/ APG-26A,
Transmitting Frequency (Radar and Beacon):
airborne gun aim radar; and Radar Set AN/APS-28,
9375 30 mc
airborne tail warning radar. The set is capable of
functioning as a radar aid to navigation and as a ground-
Receiving Frequency (Beacon): 9310 +1 mc
mapping equipment.
Range, Max:
60 naut mi for 5,000 ton ship
25 naut mi for 30,000 lb bomber
RELATION TO SIMILAR EQUIPMENT
15 naut mi for 15,000 lb fighter
120 naut mi for large coastal city
Some, but not all components of the AN/APQ-35, -
IFF Synchronizing Pulses:
35A and the AN/APQ-35B are interchangeable.
40v amplitude, 0.35 /sec time duration into a
500-ohm load shunted with 200 /-/f
TECHNICAL DESCRIPTION
IFF Video: Pulses with amplitude up to 100v
above a dc level of 12v. Input impedance is
AN/APQ-35, -35A
3,000 ohms shunted with 30 -f. Pulse dura-
Power Requirements:
tion 0.5 to 100 /Msec at 50% amplitude. All
AC Voltage - 115 vac, 400 cps, 1-ph
pulses above this level limited at 20v.
Standby Current - 15 amp, 0.905 pf lagging
Peak RF Power Output: 200 kw to antenna feed
High Power Current - 28 amp, 0.911 pf lagging
Receiving System IF. Frequency: 30 mc
Low Power Current - 24 amp, 0.927 pf lagging
Receiver Noise and TR Loss: 13.5 db (max)
Total Volt-Amperes:
Bandwidth: 1.4 or 5 mc depending on range and
Standby Current - 1,725 va
prf
High Power Current - 3,220 va
RF Response: Flat, within 1 db from 360 cps
Low Power Current - 2,760 va
to 5 mc
Total Active Power:
Presentation: PPI, s e c to r scan continuously
Standby Current - 1,561w
variable from 30 to 170 deg
High Power Current - 2,935w
Range Marks:
Low Power Current - 2,560w
2-mi intervals on 10-mi scale
DC Voltage: 28 vdc
5-mi intervals on 25-mi scale
Starting Current - 170 amp
10-mi intervals on 60-mi scale
Standby Current - 62 amp
20-mi intervals on 120- and 200-mi scales
High Power Current - 95 amp
Display: PPI with adjustable depressed center,
Low Power Current - 61 amp
Total Power:
Standby Current - 1,736w
AN/APQ-35: 1
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