...at the other end? I'm going to install two antennas on a pan-tilt unit. The pan-tilt unit has only one RF pass through for continuous pan. Is it possible to combine the signals from two antennas into one cable, let the combined signals pass through the pan-tilt unit and recover the signals at the other end?

My antennas are 900MHz (string transfer) and 2.4GHz (AV transfer).