The?StackMain Controller?is an universal stackmatch control unit.
A StackMatch is a device where you can connect several antennas – normally it?uses to support?3 antennas?- and one output
It’s a different concept than an antenna switch (3×1) because with the?StackMatch you can select more than one port at the same time.
This is the reason it includes an UN-UN (2.25:1) so when more than 1 Port (antenna input)?is selected, the UN-UN is activated.
The StackMain can select any of the following antenna combinations: