Volume 1
MIL-HDBK-162A
Section 2
15 December 1965
ITEM NAME: RADAR TRANSPONDER BEACON
TYPE: AN/APN-7
Center IF Frequency: 30 mc
Provision is made for using a coder In conjunction with
Pulse Data
the receiver-transmitter unit to assure more positive
Repetition Rate: 600 pps
identification of the aircraft in which it is installed, as the
Duration: 0.4 usec
coding can be changed from day to day or as often as
Monitoring Voltage: 5 to 70(
operating conditions require.
Peak Power Output: Approx 500w
Video Ouput Dynamic Impedance: Approx
600 ohms
RELATION TO SIMILAR EQUIPMENT
Equipment Range: Approx 50 naut mi
Power Requirements: 105 to 130v ac, 250
None.
va and 12 or 24v dc, 0.15 amps
Antenna Data
TECHNICAL DESCRIPTION
Type: 3-dipole type
Radiation Pattern: Omnidirectional In
Frequency Range: 3220 to 3320 mc
plane of radiating elements.
Local Oscillator Frequency Range: 3190 to
Temperature Range: -27 to plus 122 deg F
3290 mc
(-35 to plus 50 deg C)
IF Bandwidth: Approx 12 mc
IF Amplifier Gain: 2 to 7 per stage
INSTALLATION CONSIDERATIONS
Video Amplifier Band Width: Approx 2 mc
Not available.
Video Amplifier Gain: 60 to 90 times
overall.
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENTS
QTY
OVERALL DIMENSIONS
UNIT WT.
(Inches)
(Pounds)
Receiver-Transmitter
1
9-3/4 x 12-15/16 x 13
36
Antenna Assembly
1
3-1/4 x 3-1/4 x 24-5/8
2.5
AS-31/APN-7
Mounting Base
1
1-5/16 x 9-7/16 x 11-1/2
2.25
MT-111/APN-7
AC Power Plug
1
1-3/16 x 1-7/8 x 3
0.15
AN-310t-18-3S
DC Power Plug
1
1-1/16 x 1-1/2 x 1-3/4
0.03
AN-3106-12S-3S
Connector NT-49218
1
5/8 x 5/8 x 1-3/4
0.06
Connector, Type N
1
7/8 x 1-3/4 x 1-7/8
0.16
Cable Clamp AN-3057-4
1
25/32 x 25/32 x 1
0.02
Cable Clamp AN-3057-10
1
1-1/8 x 1-3/16 x 1-3/16
0.001
Antenna Cable RG-8/U
1
REFERENCE DATA AND LITERATURE
Technical Manuals:
CO-AN-08-30APN7-2
AN/APN-7: 2
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