Provides antenna switching in df/adf modes, accepts 15hz analog bearing data from the tacan and converts it to a sin/cos magnetic bearing output, switches the inputs of the flight director computer between the pilot and copilot avionics, signals failures and/or unsafe conditions by generating aural warning tones for the intercom system, accepts clock and sensor data inputs and sends them over a serial data bus to the mission computer unit, 14.39 in.D; 4.88 in.W; 7.75 in.H; primary power 28v DC , 8 lbs mounted on the 390r-20c mount
