http://tinyurl.com/k7rjyhlHam / CB Radio Antenna Coax LMR-400 Times Microwave Coaxial Transmission Line with PL-259 Connectors - 75ft -Product Review Click on the link for more reviewsThis is LMR400 LMR-400 - a Registered Trademark of Times Microwave SystemsPL-259 UHF coax cable connectors - Connects Antennas, Receivers, Meters and Radio transmitters75ft feet of coaxial cable USA Made LMR-400 Transmission Line Coaxial Cable with Soldered Silver Plated Connectors Teflon DielectricsAssembled by MPD Digital - a DoD Supplier - in our GA Facility using MILSPEC ComponantsImpedance 50 Ohms Frequency Range DC ~ 11 GHz - PL-259 Connectors are not recomended for use above 300Mhz (See N Male options)