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.
