Four-Square, 4 direction Transmit system.

Four-Square, 4 direction Transmit system, 7 kW CW ICAS, 120W dummy load included.

LowBandSytems 4SQUARE/TX Switch Relay Units use classic monoband Hybrid design.

Robust RedArmy relays (27VDC) and capasitors.

SO-239 input connector with PTFE Dielectric and Silver Plating.

N connectors on demand.

4 wires control line.

Phoenix plugable connector.

RF volatge detector to control DUMPED power on a load resistor.

IP65 steel enclosure.

Includes very robust 50 ohm, 120Watts very conservative rating, non-inductive dummy load of two big ceramic resistors. 

Switch relay units are made to the band of your choise, 160-10 meters.

These switch relay unit requires one of the LowBandSytems 4 SQUARE ARRAY controllers:

4 SQUARE ARRAY, 4 DIRECTION CONTROLLER LBC4

4 SQUARE ARRAY, 4 DIRECTION CONTROLLER SMART-4