The SRA-1 is a microcontroller-based system which monitors the correct operation of a main transmitter, and it switches the reserve transmitter automatically to a dummy load or to an antenna if it detects any failure in the main transmitter operation. Directional couplers at RF level are used for failure detection. Configuration fully programable by the user: 0dB power level, intervention threshold, transmitter switching time, automatic or manual operation mode, hot or cold standby.

The Transient suppressor equipment has been conceived in order to protect all TV equipment connected to the Mains AC network, against power over-voltages, also including an additional protection against indirect contact. To operate against power over-voltages, this system is fitted with high-speed A/D converters and Microprocessor circuits, continuously sampling the measured signals and making successive approach calculations, obtaining in this way a true r.m.s.