Volume 1
MIL-HDBK-162A
Section 3
15 December 1965
ITEM NAME: INDICATOR GROUP
TYPE: AN/SPA-31(XN-1)
total scale.
RELATION TO SIMILAR EQUIPMENT
Power Factor: 96%
The AN/SPA-31(XN-1) is similar to, but not
Power Supply Characteristics
interchangeable with Navy Model VL-1 Radar Repeater,
Input: 115v plus or minus 10%, 60 cps,
modified by Hughes Aircraft Company for use with
single ph
Radar Set AN/SPS-26.
Current Consumption: Modified indicator
proper, 690 va; Modification Kit 2.60
TECHNICAL DESCRIPTION
amps; total current consumption 8.60
Pulse Repetition Frequency: 470 to 2800
amps
pps
Power Consumption: Modified indicator
Video Input: 1 to 2.5v (pos)
proper, 690 va; Modification Kit 300
Trigger Input: 5 to 50v (pos)
va; total power consumption 990 va
Range Selection: 20, 40, 70 and 160 mi
Screen Diameter: 12 in.
INSTALLATION CONSIDERATIONS
Viewing Diameter: 10 in.
Not available.
Range Accuracy: Plus or minus 1.0% of
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENTS
OVERALL DIMENSIONS
UNIT WT.
QTY
(Inches)
(Pounds)
Modified Indicator CG-55AKD-1
1
19-1/2 x 24-3/8 x 40-3/B
489
complete w/tubes, fuses and
Modified VL-1 X506265-100
Viewing Hood
1
14 lg x 14-3/B dia
3
Shock Mount (Top) Assy
1
5-1/4 x 5-5/8 x 16-5/8
26
Set of Equipment Spares
1
12 x 15 x 24
57
Modification Kit Electronic Equipment
1
11.75 x 24.50 x 25.38
165
X506071-100
Technical Manual NAVSHIPS 91511(A)
2
1 x 9 x 11.5
3
Complementary Technical Manual
2
1/4 x 9-1/8 x 11-1/2
1.5
SHIPPING DATA
PKGS
UNIT WT.
(NR)
(Pounds)
1
618
1
57
1
B5
1
257
REFERENCE DATA AND LITERATURE
Technical Manuals:
NAVSHIPS 92969(A)
AN/SPA-31(XN-1):
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