Midian's VS-115-SM1G is a GPS / GLONASS speaker microphone that can connect to most conventional analog and trunked portable two-way radios. When the GPS / GLONASS speaker microphone is keyed it will send the PTT ID (ANI) and the GPS / GLONASS coordinates. The unit also supports sending of an Emergency ID with Location when activated by a button press, the Lone Worker feature or the Man-Down feature. Midian's CAD-800 base station controller decodes and displays the PTT ID along with the GPS / GLONASS location and other selectable information shown on a map using Google Earth or Terrain Navigator Pro with no monthly subscriber fees.
The VS-115-SM1G also supports decode functions such as Polling, Selective Calling, Radio Disable, Radio Enable, Spy (Remote Monitoring) and Emergency Acknowledge. These decode functions are initiated from Midian's CAD-800. Polling allows the dispatcher to request a unit's GPS / GLONASS location. Selective calling can be to call an individual unit, a group of units or all units. If a unit becomes lost or stolen, it can be disabled, so it cannot interfere with the system. If the unit is later recovered the unit can be re-enabled. The Spy function enables the dispatcher to eavesdrop on a unit during an emergency or other condition. If multiple Emergency IDs are transmitted, the dispatcher can stop subsequent Emergency ID transmissions using the Emergency Acknowledge feature.
The medium level rolling double inversion scrambling built into the VS-115-SM1G protects conversations against casual listeners and some determined listeners. The VS-115-SM1G supports the selection of up to four different codes from a possible 1020 codes (4 groups with 255 codes per group).