All Weather and Marine Radio VHF and AIS Antenna Extension Cable SO-239 PL-259 400 UHF Male to Female Connector Made in the U.S.A. 3 Ft Fully Shielded-UV Protected-Salt Tested - UL Certified Marine Grade Coaxial Cable for Marine and all VHF AIS RF Radio Antennas 60 DAY RETURNS - plus a 1 YEAR EXCHANGE for defects on All MPD Digital Cable Assemblies Outer Jacket Material: Flexible UV Proof, Non-Contaminating PVC, 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 SiteHawk SK-4000 to assure VSWR less than 1:1.35 Marine Grade Cable with Silver Teflon UHF Connectors is designed for 15 year Outdoor Exposure in Harsh Environments - When your Life is at stake buy Coax that can be trusted.