The Model 1800 radio operates as the Master Station of a multiple address radio system, commonly used for SCADA communications. The 1800 may be co-located
with the SCADA Master Control, or connected via microwave, telephone line, or another 1800, configured as a polling remote. Several Model 1800s sharing the same
frequency can be configured as multiple repeaters to allow coverage of dead spots created by terrain and structures. Alligator’s development staff assigned significant emphasis to suggestions of MAS users, virtually eliminating routine maintenance procedures. The unique common time base provides zero frequency offset between transmit and receive modules. Beat tone between two active transmitters is eliminated. Frequency calibration of the entire unit requires a single adjustment by connecting a general purpose PC. Self-prompting Alligator software replaces hand tools and test equipment, and SCADA polling is not interrupted. Tedious and time-consuming manual adjustment of receiver modules causing SCADA down time are eliminated.
Model 1800 has built-in intelligence to perform automatic functions such as periodically checking of a warm standby transmitter module, schedule rotation of the primary transmit module with the secondary transmit module. When a replacement module is installed, the Model 1800 automatically programs the operating frequency of the new module. A built-in auto answer device allows a technician to dial up from anywhere, through any phone outlet without the use of a modem, and perform diagnostics to the model 1800 as well as all the associated remote radios in the same network.