The Barker & Williamson VS 300A Transmatch is designed to match virtually any Receiver Transmitter or Radio gruppo/ricetrasmettitore'>Transceiver in the 160 to 10 meter range (1.8 to 30MHz) with up to 300 watts RF power to almost any Antenna including dipoles, inverted vees, verticals, mobile whips, beams, random wires and others, fed by coax cable, balanced lines or a single wire. A 1:4 balun is built in for connection to balanced lines.