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US Military Sensors : AS-2801/SRT

AS-2801/SRT
Physical Dimensions
Length 120 feet each section
Antenna is assembled from 5/16 inch vinyl covered phosphor bronze wire rope
Weight 80 lbs each section
Operating Temperature -54 C to +65 C
Frequency Range 300 to 1500 kHz
Input Impedance 50 ohms (to tuner)
VSWR n/a
Polarization Horizontal
RF Power Rating 1 kilowatt (average)
Power Requirement None
Feed Type Unbalanced, wire rope from tuner
Input Connector Bolted tuner feedthrough insulator stud

Description: The AS-2801/SRT is a wire rope antenna designed for use onboard LHA amphibious assault ships. It consists of two wire rope sections, one for the starboard antenna and the other for the port antenna. The antennas are strung between the yardarms of two masts. The starboard antenna is fed from a tuner on the after mast and the port antenna from a tuner on the forward mast. The antenna may be used with any transmitting equipment capable of operating within its frequency range and power handling limitations.

Installation: The wire rope sections are attached to padeyes on the yardarms. The lead to each tuner is made from a TEE fitting to a strain insulator and jumper to the tuner. A safety link is used at the end opposite the feed point of each horizontal section.

Considerations: After installation the antenna must be stressed as specified in the installation requirements. The area in the vicinity of the couplers and feed points must be kept clear of interferences from ship's rigging. All fittings must be treated with vinyl coatings to reduce electrostatic interference from precipitation.
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