AS-1729/VRC
AS-1729/VRC VEHICULAR ANTENNA
THE AS-1729/VRC 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
This is a VHF Low Band, 30 - 76 MHz Antenna composed of the following elements.
- MX-6707 Base Matching Unit
- AS-1720/VRC Lower 52" Antenna Element that is like a coax with inner and outer conductors
- AT-1095/VRC Upper 66" Antenna Element is a single conductor with a MS-11x style thread
The band switch can be controlled manually or by means of a 12 conductor cable. There is a rotary solenoid that rotates the switch until it gets to the desired band position then stops.
The overall length from the bottom of the mounting flange to the tip of the safety cap is 123 inches.
Used with vehicle installations which have the radio sets AN/VRC-12 Series, AN/VRC-53, AN/VRC-64, AN/GRC-125 or AN/GRC-160. The matching unit MX-6707/VRC tunes the antenna elements automatically or by manual selection via a selector knob on the base.
The MX-6707 base tuning unit uses capactance and inductance to match the antenna, not lossy resistance as is used on the newer matching bases that are now needed for frequency hopping radios like the SINCGARS. So the AS-1729 is more efficient than the newer antennas.
Media:associated-ind_-_AS-1729_VRC.pdf
