Volume 1
MIL-HDBK- 162A
Section 2
15 December 1965
AN/ARR-27, -27A
28 vdc, 3 amp
FUNCTIONAL DESCRIPTION
Frequency: 465 to 510 me
Pre-Set Tuning: Any 4 channels between 465 and 510
Radar Receiving Sets AN/ARR-27 and -27A are
mc
airborne radar relay receiving equipments for AEW
Type of Tuning: Rotary air capacitors adjusted in
systems. Their purpose is to receive video, [FF, and
channel steps by remotely controlled, motor driven,
azimuth information originating in a remote search radar
detent tuning mechanism
and transmitted by a radar relay transmitter.
Radio
Input Signal: Video modulated if.
energy fed from
Receiving Sets AN/ARR-27 andAN/ARR-27A have two
either
of two antennas into the ANT 1 or ANT2 input
functions, either or both of which may be utilized
receptacle
separately or simultaneously in a normal installation.
RF Input Impedance: 52 ohms
The equipment may be used with a radar relay
at
transmitter as part of a relay station, or it may serve as
-3 db
a remote indicator by presenting the basic information
Sensitivity: A pulsed rf input signal having a peak value
on a PPI at the receiver location.
of 4 v or less will produce an output signal equal to
the rms value of the noise signal at the video output
RELATION TO SIMILAR EQUIPMENT
of the receiver
None.
Selectivity: The selectivity curve at -40 db from
resonance has a width of 11 mc or less for cw
TECHNICAL DESCRIPTION
signals
Operating Voltages:
Basic Receiver: Superheterodyne
115 vac, 320 to 1, 000 cps, 3-ph, 625 ma
INSTALLATION CONSIDERATIONS
Not available.
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENT
QTY
HEIGHT
WIDTH
DEPTH
UNIT WT.
(Inches)
(Inches)
(Inches)
(Pounds)
Radio Receiver R-267/ARR-27
1
7-13/16
10-17/32
23-l/32
31.50
Video Decoder KY-42/ARR-27
1
7-13/16
10-17/32
23-1/16
28.50
Power Supply PP-389/ARR-27
1
7-3/4
5-5/16
22-1/2
25.40
Receiver Control C-532/ARR-27*
1
4-3/16
5
9-15/16
3.60
Receiver Control C-750/ARR-27A**
1
4-1/8
5-3/4
7-1/4
2.00
Power Supply PP-444/ARR-27
1
4-5/8
2-7/16
13-15/16
4.30
Range-Azimuth Indicator
1
5-15/16
6
13-7/8
14.50
IP-41/ARR-27
* AN/ARR-27 only
** AN/ARR-27A only
REFERENCE DATA AND LITERATURE
Handbook:
AN16-30 ARR27-3
AN/ARR-27: 2
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