Heavy Duty 2,500 Watt PEP Antenna switch for Ham Radio, CB, Scanners & Two-way. HF/VHF/UHF compatible. Extremely low SWR. Isolation is rated better than 60 dB at 30 MHz to better than 50 dB isolation at 500MHz. Negligible insertion loss. 50 Ohm. Accepts cables with PL-259 Connectors. Instantly select any of 4 antennas, or center ground position. Built in Surge Protection, unused termilals are grounded. 0-500Mhz. Can be used with Optional Cable Adapters ( purchase seperate) if cables have SMA, 'N' 'Mini UHF' or other connectors that do not mate directly with the SO-239 on the switch.