Volume 1
MIL-HDBK-162A
Section 2
15 December 1965
TECHNICAL DESCRIPTION
FUNCTIONAL DESCRIPTION
Operating Voltages and Power Requirements:
The AN/APN-1, 1B, 1X provide direct measurement
AN/ANP-1, 1B -22 TO 29.5 vde, 2.6 amp at 27v
of terrain clearance by electrically measuring the time
AN/APN-1X - 11 to 14.75 vdc, 5.3 amp at 13.5 vdc
interval required for a transmitted radio signal to travel
to earth and return to the aircraft. Altitude is indicated
directly by a dc meter (Altitude Indicator) operated from
the altimeter. Two altitude ranges are provided.
INSTALLATION CONSIDERATIONS
RELATION TO SIMILAR EQUIPMENT
Similar to Radio Set AN/ARN-1 except the AN/ APN-1
Not available.
has dual range.
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENT
QTY
HEIGHT
WIDTH
DEPTH
UNIT WT.
(Inches)
(Inches)
(Inches)
(Pounds)
Radio Transmitter-Receiver
1
8-19/32
7-9/64
18-1/16
18.70
RT-7/APN-1 or RT-40/APN-1X
or RT-7A/APN-1
8-19/32
7-9/64
18-1/16
19. 20
Mounting Base MT-14/ARN-1 or
1
7-5/8
2-1/4
18-1/16
1. 50
MT-14A/ARN-1
7-41/64
2-27/64
18-3/16
2.40
Attitude Indicator ID-14/APN-1 or
1
3-1/4
3-1/4
5-1/32
1.80
ID-14A/APN-1, or ID-14B/APN-1
Attitude Limit Switch SA-1/ARN-1 or
1
3-1/4
3-1/4
5-23/32
0.95
SA-IA/ARN-1
Antenna AT-4/ARN-1
2
7-9/16
1-25/32
11-9/16
0. 70 ea.
REFERENCE DATA AND LITERATURE
Technical Manuals:
AN- 16-30APN1-3
AN- 16-30APN1-4
Specifications:
RCA-AS-5796-G
MIL-R-5689(Aer)
AN /APN-I: 2
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