Array Solutions STACK MATCH II
ARRAY SOLUTIONS STACK MATCH II
The StackMatch II control switch box has a rotary switch and three LEDs which display the antennas selected. The LEDs will light to indicate in the same pattern as chosen with the switch. Antenna 3 is your upper or U antenna, and antenna 1 is your lower or L antenna on the switch. When you rotate the pointer knob you can chose U, L, B, or AUX. The other positions will be off. But the StackMatch will default to full stack when no relays are energized. Pretty handy if you should have a 12V DC supply failure in a contest.
More detailed info at the Array Solutions web site here: