18" Cable Adapter SO-239 (UHF Female) to SMA Male Frequency - 0-1300Mhz Uses very thin but low loss coax to reduce strain on your radio's antenna connector caused by heavier coax and provides a flexible jumper. Get your HT or scanner connected quickly using one of these Comet adapter cables. They are manufactured from quality materials and feature pre-terminated connectors for maximum durability. Available in a variety of different combinations, these adapter cables will have you up and running in no time