That would just be a vehicular mounted RT524 in an AN/VRC-46 configuration.The AN/PRC-77 beside it is just that...a manpack.
However, if you have the RT 524 mounted as above and an RT-841 mounted on the AM 2060 Power Tray Assembly, it would then be an AN/GRC-160. The accessory pack would be issued for the "77" so that it could be used as a vehicular radio, or for use as a manpack.
Taking the above paragraph further, If the RT-841 was mounted "permanently", i.e. no accessory pack provided, it would then be an AN/VRC-64.
Clear as mud, but it covers the ground.
