A customer contacted us looking for a wireless intercom to connect between a downstairs and an upstairs room addition. They had a 3-channel intercom that communicated over the house wiring using FM frequencies. It used to worked fine except the few times when they plugged in a laptop nearby to charge. Then they got...
In some military applications, radios normally require a frequency clearance via a DD 1494, APPLICATION FOR EQUIPMENT FREQUENCY ALLOCATION before they can be used. If submitted, the DD 1494 will be rejected because the MURS frequencies are not allocated for federal usage.
A wireless security gate intercom provides long range, 2-way voice communication to a two-way radio or wireless intercom. They can be used to open gates or doors from remote locations, which means monitoring personnel do not have to be confined to a desk. These intercoms are also called "wireless call boxes" and are essentially long-range two-way radios in a water and vandal resistant case with some added features. There are no air-time or telephone service fees with these systems.