High Gain Antenna & Coaxial Cable (LMR400, About 20 Meter / 60 Feet) 20 meters of coaxial cable; Pre-connected reverse thread TNC and N-type adapters; Designed for indoor and outdoor use. High Gain External Antenna For Both Indoor & Outdoor Use Includes 66 Ft Of Low Loss Coax Cable For Use With: Freestyl 1 Systems, Durafon 1X Systems. Durafon 4X Systems, Durafon Pro Systems, Ep-490 Systems, Ep-436 Systems, Sn-920 Systems And Sn-900 Systems