In two-way radio systems Quasi-Sync, also often referred to as Simulcast, refers to the practice of transmitting a signal (usually voice) to a group of mobile units across a wide geographic area via multiple transmitters. Quasi-Sync allows multiple RF transmitters using a single identical frequency to provide this extended coverage. This is especially important in applications that require wide-area coverage while still preserving limited radio spectrum bandwidth or channels. SOLAR is an integrated system that can provide Quasi-Sync capability using a user supplied IP Network to connect all system elements.

The SOLAR module features include:

• Digital interconnection links (either internet or Intranet)
• Synchronization of input to Base Station Transmitters, automatically compensating for link delay
• Can incorporate a voter, which automatically selects the best Base Station Receiver
• A 1PPS input from a GPS receiver to synchronise each site
• 8 controls and 8 monitor I/Os to facilitate remote supervision of the local environment.
• Supervision features enable the user at the Central Interface Unit to determine the status of that Unit, the Station Unit and Environment.

The COSMOS family, which is an analogue version of SOLAR and used in non-IP applications, is also available upon request.

Used in the Quasi – Sync System, the model 40742 GPS Antenna RX is an aerial, receiver and serial interface all in one self-contained unit. Based on a Furuno module it provides a 1PPS stream along with NMEA format time, position and status data via two duplex serial interfaces. There is no need for RF in the interconnecting cable.

• GPS Standard Positioning Service
• 12 Channels of continuous tracking
• RS422 Time/Status Interface
• Weather and UV resistant Operating -30 ° C to 70 ° C