Volume 1
MIL-HDBK-162A
Section 3
15 December 1965
ITEM NAME: DIRECTIONAL ANTENNA ASSEMBLY
TYPE: AN/UPA-4
Type of Control: Synchro control trans-
Friendly ships or planes are equipped with receivers
former
and transmitters in resonance with each other. When
Type of Drive: dc, drive motor
necessary, identifying signals may be changed quickly
Frequency Operates in Mark 5 frequency
and frequently.
Servo Amplifier AM-94/UPA-4 Data
Unit Function: Amplifies synchro error
voltage from antenna pedestal to drive
RELATION TO SIMILAR EQUIPMENT
antenna in train. Operates a pilot
light to indicate errors of less than
None.
3 deg
Input: 115/180/230v ac, 50/60/400/500 cps,
TECHNICAL DESCRIPTION
1-ph
Operating Power Requirements: 90 to 115v ac,
Type of Operation: Manually or driven in
50/60/400/500 cps, 1-ph
synchronism with a radar antenna.
Train Control Unit C-234/UP Data
INSTALLATION CONSIDERATIONS
Unit Function: Control train angle and
rotation of a directional antenna;
Siting: Ship or land.
feeds 3 wire synchro position voltage
Related Equipment: The AN/UPA-4 is de-
to antenna pedestal of antenna assy
signed to be used with, but not part
Input: 115/180/230v ac, 50/60/400/500 cps,
of Radar Set AN/CPX-3, AN/CPX-4 and
1-ph
other MK V, IFF equipment.
Antenna Assembly AS-144/UPA-4 Data
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENTS
QTY
OVERALL DIMENSIONS
UNIT WT.
(Inches)
(Pounds)
Servo Amplifier Unit AM-94/UPA-4
1
10 x 12-7/8 x 14
40
Antenna Unit AS-144/UPA-4
1
16-5/8 x 29-3/8 x 30
45
Train Control Unit C-234/UP
1
10-1/2 x 13-5/8 x 15-5/8
78
REFERENCE DATA AND LITERATURE
Technical Manuals:
NAVSHIPS 91015
AN/UPA-4: 2
Previous Page
