MPD Digital S9-731Y-T7ZU LMR-400 Coaxial Cable Ham or CB Radio Antenna Line PL-259 Connectors (4-Feet) LMR400 LMR-400 is a Registered Trademark of MPD Digital Systems PL-259 UHF coax cable connectors - Connects Antennas, Receivers, Meters and Radio transmitters 4ft feet of coaxial cable USA Made LMR-400 Transmission Line Coaxial Cable with Soldered Silver Plated Connectors Teflon Dielectrics