Vehicular Antenna is a center-fed whip antenna that operates
in the frequency range of 30-76 MHz. The primary application
and use of this antenna is to replace the Antenna AT-912/VRC
and operate as a vehicular antenna in the following radio
sets: AN/VRC-12 through AN/VRC-49, AN/VRC-53, AN/VRC 64,
AN/VRC-65, AN/VRC-6550, and AN/GRC-160, as well as many
other VHF Radio Sets that require vehicular installation.
In addition the AS-1729/VRC Antenna can be used to extend
the communication range in radio sets: An/PRC-25, AN/PRC-77,
and AN/PRC-1177, as well as many other UHF radio sets
operating in the 30-76 MHz frequency range.
The AS-1729/VRC is an omnidirectional antenna assembly built
to MIL-A-55288C (CR) specifications. The antenna is
vertically polarized and centerfed, operating in the 30-76
MHz range, with 10 frequency band segments. Band switching
is automatic if the antenna is connected to a compatible
transceiver with automatic antenna switching capabilities.
The band switching may be exercised manually by operating
the control located at the base of the matching unit if the
antenna is connected to other receivers and transceivers.
The AS-1729/VRC consists of three units: MX-6707 Base
Matching unit with spring and cable assembly; AS-1730 Lower
Antenna element; and AT-1095 Upper element. The based
matching unit is interfaced to the vehicle with four bolts
and a gasket provided with the hardware kit. Electrical
connections consist of an RF input connector for connection
to the RF outputs on the transmitter/transceiver; automatic
band switching control for connection to
transmitters/transceivers with automatic band switching
characteristics; and a ground stud which electrically
grounds the base matching unit to the vehicle.
The AS-1730 lower antenna element and AT-1095 upper antenna
element are fastened together by tapered lock ferrules, and
then installed on top of the base matching unit providing a
complete 30-76 MHz antenna system.
The AS-1729/VRC is designed for use on the outside of jeeps,
tanks, armored-personnel carriers, weapons carriers, or crew