MPD Digital LMR-400 Coax US Made Ham or CB Radio Jumper PL-259 Connectors Ultra Low Loss Antenna Cable (100feet) This is LMR400 LMR-400 - a Registered Trademark of MPD Digital Systems PL-259 UHF coax cable connectors - Connects Antennas, Receivers, Meters and Radio transmitters 100ft 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)