we have the weboost 4gx-RV and depending on use, the outside antenna is as close as 3ft horizontal and 6ft vertical to the inside antennas. Outside antenna is an omni on a 10ft fiberglass pole. And in both strong and weak signal areas, never had interference. In a weak signal area signal was -125db w/o booster and -70db with the booster and no feedback. In strong signal area signal was -100db w/o boost and as low as -60db with boost, again no interference. And my inside antennas are connected through a 3db splitter to a cradle and a 360 degree horizontal radiation oattern ceiling dome antenna. Trailer is a fiberglass wall.
I also have the weboost 4g-x booster in a smaller aluminum wall cargo trailer with less than 3ft seperation to the roof antenna with again a cradle and ceiling antenna with no interference.
How long these will last don't know. the previous units were wilson 3g units that also didn't seem to suffer from inteference between antennas
