RCS-4 RCS4 Original Ameritron 1-30 MHz 4 Position Antenna Switch The weatherproof switching box uses three heavy-duty 10 ampere contact relays on a G-10 fiberglass circuit board. Quality components are used throughout the entire unit to ensure maximum life for the sometimes difficult-to-reach switching box. RCS-4 antenna switches operate from any 120 V AC power source that allows for safe operation with 14 V control voltage. Frequencies from 1.8 to through 30 MHz are covered by these convenient station accessories that handle 1,500 watts continuous. RCS-4L switches ("L" for lightning) incorporate a gas-tube surge suppressor for protection from lightning induced voltages. The RCS-4 operates from 120 VAC, while the RCS-4X operates at 220/240 VAC. It allows safe operation with 14 volts control voltage. Frequencies from 1.5 to through 100 MHz are covered by this excellent station accessory. It also handles over 2500 watts.