The FC-40 is a microprocessor-controlled antenna impedance matching network designed to provide all-amateur-band transmitting capability with the FT-897/857 Series of transceivers, when used with an end-fed random wire or long whip antenna. It also works on certain other Yaesu models, too. The FC-40 makes use of the control circuitry built into the transceiver, which allows the operator to control and monitor automatic operation of the FC-40, which mounts near the antenna feedpoint. The FC-40 uses specially selected, thermally stable components, and is housed in a waterproof case to withstand severe environmental conditions with high reliability. 1.8 – 54 MHz with 20+ m end-fed wire, 7 – 54 MHz with YA-007 HF 2.5 m Mobile Whip Antenna. 2.0:1 or less. 4 W 60 W. 13.8 V DC ±15% (supplied from transceiver). 9.4″ x 7″ x 2.1 (236 x 175 x 53 mm).
