LMR400 LMR-400 is a Registered Trademark of Times Microwave Systems - This Is Genuine LMR-240 * N Male coax cable connectors - Connects Antennas, Receivers, Meters and Radio transmitters * 40 feet of coaxial cable USA Made LMR-400 Transmission Line Coaxial Cable with N Male Plated Connectors Teflon Dielectrics * Assembled by MPD Digital - a DoD Supplier - in our GA Facility using MILSPEC Componants * ImUltpedance 50 Ohms Frequency Range DC ~ 6 GHz - PL-259 Connectors are not recomended for use above 300Mhz (See N Male options)