MPD Digital LMR400-W-PL259-100ft Radio Antenna Cable VHF & AIS Coaxial with Silver Teflon UHF PL-259, 100' Dual Shielded-UV Protected-Salt Tested - UL approved Marine Grade Coaxial Cable for Marine and all VHF RF Radio Antennas Outer Jacket Material: Flexible UV Proof WP-PE, Outer Diameter: .405 (10.3mm) nom., SRL: per MIL-C-17/74 - Foam Dielectric Aids Flexibility MADE IN THE U.S.A. by FCC Licensed Ham Radio Operators - Swept with Bird Site Hawk SK-4000 to assure VSWR less than 1:1.35 Marine Grade Cable is designed for 15 year Outdoor Exposure in Harsh Environments - When your Life is at stake buy Coax that can be trusted 1 YEAR EXCHANGE for defects on All MPD Digital Cable Assemblies