PCTEL MAXRAD Stainless Steel Antenna with Spring for 150-550 MHz 2 Meter and 70 CM Ham Bands WITH PCTELL Brass NMO Mount Plus 18 ft of Coax and PL-259-Connector (Antenna plus 18ft standard 3/4 NMO Mount - SMA Male) Why do Some Radios reach out long distances while others only manage to transmit a few miles? SIMPLE - Just how much of your radio signal actually Reaches Your Antenna! Cheap Chinese coax and antennas leak signal and mangles your SWR. Outer Jacket Material: Flexible UV Proof FR-PVC, Outer Diameter: .195(in) nom., SRL: per MIL-C-17/26 60 DAY RETURNS - plus a 1 YEAR EXCHANGE for defects Flexible Non-Contaminating PVC jacket with Dual Braid Shields and Polyethylene Dielectric