micro STACK SWITCH™ is a high power rated, remotely controlled antenna match and switch inside a waterproof house. micro STACK SWITCH can match up to three (3) antennas to the two (2) radios output. Any combination of the antennas can be switched to the RADIO MAIN feed and any single antenna can be switched to the RADIO SUB feed. It can be fit up inside the shack or outside on the tower.