Volume 1
MIL-HDBK-162A
Section 1
15 December 1965
ITEM NAME: RADAR IDENTIFICATION SET
TYPE: AN/GPX-6A
Operating Voltage and Power Requirements: 115v
OA-839/GPX-6A. Coded and uncoded outputs from the
ac, 55 to 110 cps, single ph
OA-839/GPX-6A are selected at the ten PPI scopes as
Type of Presentation: Indicators PPI
elongated marks. Five PPI scopes are associated with
Duty Cycle: 0.32
normal (front beam) radar and five PPI scopes are
Pulse Repetition Rate: 108 to 120 pps (adjusted to
associated with early warning (back beam) radar.
PRR of associated radar)
RELATION TO SIMILAR EQUIPMENT:
Pulse Width: 0.7 to 1.2 usec
Similar to and interchangeable with Radar
INSTALLATION CONSIDERATIONS:
Identification Set AN/GPX-6, differs in that this
Siting: Dependent on location of associated radar.
equipment also decodes responses from Transponder
Set AN/APX-25.
Mounting:
Components of this equipment are
installed on the associated basic radar.
TECHNICAL DESCRIPTION:
Related Equipments: Radar Identification(n Set
Frequency: Transmitting, 990 to 104 mc
AN/GPX-6A was primarily designed for use with
Receiving, 1080 to 1130 mc
Radar AN/CPS-6B.
Peak Power Output: 20 kw
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENT
QTY
HEIGHT
WIDTH
DEPTH
UNIT WT.
(Inches)
(Inches)
(Inches)
(Pounds)
Video Decoder KY-118/GPX
12
28-3/16
18
13
161
Video Decoder KY-119/GPX
2
28-3/16
18
13
96
Interrogator Set Code
1
28-3/16
18
13
121
KY-120/GPX
Electronic Gate TD-94/GPX
1
28-3/16
18
13
93
Coder-Decoder Control
1
6-3/16
6-3/16
6-7/16
2-1/2
C-2034/GPX-6A
Remote Switching Control
10
6-3/16
6-3/16
12-7/16
6
C-2035/GPX-6A
Indicator Control
10
6-3/16
6-3/16
12-7/16
8
C-2029/GPX-6A
Interconnecting Box
1
7
6-1/8
3
2-1/4
J-782/GPX-6A
Relay Assy RE-289/GPX-6A
1
6-1/2
6
3
1
Relay Assy RE-288/GPX-6A
1
3-5/16
9-1/1
12
4-1/2
Interconnecting Box
1
6-1/4
7-5/8
3
1
J-781/GPX-6A
Electrical Frequency Control
8
17
6-1/2
2
C-2028/GPX
Mounting MT-1501/GPX
10
18-1/2
19-13/16
3/16
6
(6 per carton)
Electrical Equipment Rack
8
73-5/8
18
30
132
MT-1502/GPX
Interconnecting Box
3
3
13-1/16
7-1/8
5-1/2
J-664/GPX
AN/GPX-6A: 2
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