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US Military Sensors : AS-2410/WSC-1(V)

AS-2410/WSC-1(V)
Physical Dimensions
Height 55 - 1/4 inches
Diameter 360 deg. swing circle, swept volume, 34 inch radius sphere with center 30 - 1/4 inches above the deck.
Weight 225 lbs
Operating Temperature -54 C to +55 C
Frequency Range Transmit: 302.5 to 312.5 MHz; Receive: 247.6 to 255.1 MHz
Input Impedance 50 ohms
VSWR > 1.5:1 240 to 290 MHz, and > 1.2:1 290 to 350 MHz as measured at the input to the antenna pedestal
Polarization Right-hand Circular
RF Power Rating 1 kilowatt
Power Requirement Power required for antenna drive motors and antenna position and control are supplied from RE-1025/WSC-1(V) Relay Assembly and C-8211/WSC-1(V) Antenna Control.
Feed Type Unbalanced, coaxial cable
Input Connector 7/8 inch ETA flange

Description: The AS-2410/WSC-1(V) is a circularly polarized crossed dipole antenna. It includes four crossed dipole elements, a 90 degree hybrid, two combiners and a dummy load. The antenna is mounted on a pedestal which contains the azimuth and elevation motors, azimuth and elevation synchro transmitters, azimuth control transtormer and antenna disable switch. Two each AS-2410/WSC-1(V) antennas are supplied as components of each AN/WSC-1(V) Tactical Satellite Communication System. The control and monitor functions of the antennas are accomplished by the C-8221/WSC-1(V) Antenna Control Unit. This unit provides manual or automatic antenna selection, position control and monitoring functions. The antennas are used to transmit and receive simultaneously in the UHF range, provide the necessary azimuth and elevation controls required to direct the antenna at the desired satellite and maintain tracking during ship movement. Dual antennas are used to prevent masking of the antenna system by the ship's superstructure. It one antenna's coverage is blocked the control system automatically switches operation to the other antenna.

Installation: The antenna pedestal mounting base has 12 equally spaced 3/4 inch holes on a 16-1/2 inch bolt circle for use in the installation of the antenna. The overall diameter of the base plate is 17 - 1/2 inches. The antenna may be deck mounted or installed on a suitable mounting base. Two antennas are installed with each system to give maximum view area of the satellite within the physical constraints of the ships structure and fittings. The location of the antennas should be selected to provide adequate clearance for the antenna during its movement within the swept volume sphere. The two antennas should be located so that the satellite is always in view of one with a minimum overlap of 10 degrees between sectors and hemispherical coverage from 10 degrees above the horizon to zenith.

Considerations: Radiation hazard carn operating switches are located in the antenna pedestal to disable the transmitting system at relative antenna azimuths wherever radiation may be hazardous to ships personnel. The hazardous azimuths are determined at the time of installation, and the carns adjusted to operate the cutout switches when the rotating antennas reach these bearings.
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