Models SW 78.01, SW 78.02 and SW 78.03 are motor-driven, two-way coaxial transfer switches designed to change coaxial connections with minimum off-air time. They are primarily used for switching transmitters, antennas, dummy loads and other peripheral equipment in situations when broadcasting procedures are modified, when there is a need for emergency repair, or during scheduled maintenance.

The coaxial switch provides two isolated RF paths for each set of switch connections. For the prevention of any damage, auxiliary microswitches are built in, that remove the RF power just before the RF spring contacts start to open and connect it again just after the RF contacts reach their final position.

The aluminium cavity has four ports terminated with standard 7/8" EIA flanges including non-removable inner conductor connectors. The assembly is not gas-tight. The switch is equipped with a mechanical position indicator and emergency knob for manual operation.

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