MPD Digital NN-GJYW-6Z6Q Ham/CB Radio Coax UHF VHF HF LMR-400 Coaxial Cable Antenna Line PL-259 Connectors, 25-Feet LMR400 LMR-400 is a Registered Trademark of MPD Digital Systems - This is genuine LMR-400 PL-259 UHF coax cable connectors - Connects Antennas, Receivers, Meters and Radio transmitters 25 ft. feet of coaxial cable USA Made LMR-400 Transmission Line Coaxial Cable with Soldered Silver Plated Connectors Teflon Dielectrics Assembled by MPD Digital - a DoD Supplier - in our GA Facility using MILSPEC Components Impedance 50 Ohms Frequency Range DC ~ 11 GHz - PL-259 Connectors are not recommended for use above 300Mhz (See N Male options)