User's Manual

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2.2.2. RF Interface
RF interface is a 50-ohm impedance matched standard MMCX connector as required by
regulation. The RF interface can operate without damage to the unit under DC short and open
conditions.
The RF interface is protected against static discharge (15 kV air discharge, 8 kV contact
discharge) and unloaded output.
Switching from UHF module to cell module operation mode and vice versa is provided on RF
interface in case if they share the same antenna.
2.2.3. Antennas
Antenna type depends on the site requirements, and may be directional or omni-directional. The
antenna must have a 50-ohm impedance matched interface with VSWR 2.0:1 or better.
The Base transceiver is recommended to be mounted on an antenna mast that elevates the antenna
a minimum of 40 feet above the average level of the terrain to support 15 miles distance range.
2.2.4. Power Interface
The power interface allows connection to an unregulated DC power source. The DC power source
(thirdparty or user supplied) must provide peak 7.5 W of DC power 4.2 V ± 5 %.