MIL-HDBK-162A
Volume 1
15 December 1965
Section 2
DATE: 1 July 1961
ITEM NAME: RADAR SET
COGNIZANT SERVICE: USN
TYPE: AN/APN-122
FEDERAL STOCK NUMBER:
USA
USN
USAF
USMC
STATUS OR TYPE CLASSIFICATION
Mfg(s) Name or Code Number: Ryan Electronics, Div. of Ryan Aeronautical Co., San Diego, Calif.
Illustration Not Available
Phase 3 - 108 to 121v to line neutral, 380 to
FUNCTIONAL DESCRIPTION
420 cps, 203.0w, 275 va
Phase Total - 574. 1w, 749 va, 420.6 var,
Radar Navigation Set AN/APN-122 was designed for
0. 770 pf
installation on several types of aircraft. Variations exist
Temperature Limits (Overall):
on some of the units used in the set. The set uses
-55 to 71 deg C, continuous operation at sea
doppler effect to determine the amount of clearance
level
between terrain and aircraft flights.
-55 to 8 deg C, continuous operation at
70, 000 ft
Temperature Limits for Ground Speed and Drift
RELATION TO SIMILAR EQUIPMENT
Angle Indicator:
-55 to 55 deg C, continuous operation at
Similar to AN/APN-97.
sea level
-55 to 20 deg C, continuous operation at
TECHNICAL DESCRIPTION
70, 000 ft
-55 to 71 deg C, intermittent operation
Frequency: Transmitting, 13. 3 kmc 5 mc; re-
(30-rnin intervals) at 70,000 ft
ceiving, transmitted frequency minus fre-
Altitude Limits: Sea level to 70,000 ft over land
quency change due to doppler effect
or over water having a sea state of Beaufort
RF Power Output, Avg: 150w min
1 or greater
Beam Width: Two 3-1'2 deg beams
Operating Voltages and Power Requirements:
INSTALLATION CONSIDERATIONS
Phase 1 - 108 to 131v to line neutral, 380 to
420 cps, 196. 1w, 247 va
Not available.
Phase 2 - 108 to 121v to line neutral, 380 to
420 cps, 175.0w, 245 va
AN/APN- 122: 1
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