HF Radio Antenna Tuner matcher for HF frequencies between 1.8 -60Mhz. * Requires Optional Patch cable with PL-259 connectors for hookup to transceiver. * Features Cross-needle SWR/Power meter ( 300W & 30W scales), meter illuminates if hooked up to 12Vdc. * 300W max input. SO-239 input for antenna. With instructions.