For our installation of the RUT955 into a variety of trailers, we are considering adding a higher-gain external antenna (on a mast) for the cellular signal. Since the RUT955 has two cellular antenna jacks, we are curious if we would have to add external antennas to both jacks, or can we simply add the one external antenna, and leave the other antenna as it is within the trailer.
Are both antenna required to be identical for diversity purposes, or can they be different, and have different placement?