LMR-400 Coax US Made Ham or CB Radio Jumper Times Microwave PL-259 Antenna Cable (4 feet) This is Genuine US Made LMR400 LMR-400 - a Registered Trademark of Times Microwave Systems PL-259 UHF coax cable connectors - Connects Antennas, Receivers, Meters and Radio transmitters 4 ft feet of coaxial cable USA Made LMR-400 Transmission Line Coaxial Cable with Soldered Silver Plated Connectors Teflon Dielectrics Ultra low loss characteristics ensure the maximum performance of your installation Impedance 50 Ohms Frequency Range DC ~ 11 GHz - PL-259 Connectors are not recomended for use above 300Mhz (See N Male options)