TUNWALL TRC-1P-N SINGLE SWITCH CONTROLLER, FOR 2 TRANSMITTERS, ONE ANTENNA AND A DUMMY LOAD. FOR FM, NON-DIRECTIONAL AM OR TV INSTALLATIONS, PLUS AUTO RF ON/OFF FUNCTION W ITH SNMP v2c AND WEB SERVER

The Tunwall Radio TRC Series is the clear choice for transmitter site switch control. Reliable, easy to install and use, the TRC Series is compatible with all coaxial switches and contactors. Launched in 2004 with a single switch controller, the TRC Series now includes ten models for a variety of switch configurations. The latest addition is the “N” series controllers. These units, with multiple options for single or dual switch control, feature SNMP capability and a built-in web server.

Inside and out, the TRC Series design is unique. All models use programmable logic controllers. Using a timed sequence, the controller removes RF power, moves the switch(es), and verifies switch positions before RF power is restored. An auto transfer mode allows for changing transmitters automatically if the main fails. The key switch operated local mode prevents remote commands during maintenance. And load testing is protected via the automatic load interlock.

The PLCs in the TRC Series have proven to be extremely reliable. They are designed to withstand typical challenges to electronic equipment in industrial environments; heat, dust vibration, magnetic fields and power line transients.