The MX-6707/VRC Antenna mast base and Automatic Antenna Tuner "ATU" operates over 30 to 76 MHz VHF range in 10 band segments. Automatic Tuning of any one of 10 segments automatically selected by a solenoid-driven switch in the matching unit. Solenoid is controlled from receiver-transmitter RT-246/VRC or RT-524/VRC, or from amplifier power supply OA-3633/GRC.
The MX-6707/VRC Antenna mast base is used with 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.
RECEIVER TRANSMITTER RT-66/GRC USED BASIC TESTEDWORKING CONDITION
Frequency range 20 - 28 MHz, VFO tuning, output 2 or 16 watts RF. Use with handset H-33*/PT or speaker LS-166/U. Different manuacturers in US, Germany and other countries. Used in most NATO armies.
Receiver-transmitter, FM, 30-74.95MHz, 50 KHZ spacing, 920 channels. Manual tuning version of RT-246/VRC with built-in loud-speaker. The RT-524/VRC is the major part of AN/VRC-12 vehicle radio station typically used in M151 Truck, Utility ¼-Ton, 4x4 Mutt Jeeps series of vehicles as well as in older Humvee's and tanks.
Operates from 24 VDC vehicle battery or power supply. Transmitter output power 8W (low) and 35W (high).
