The UHF female crimp connector for LMR 400 is a low-frequency RF connector designed to terminate LMR-400 coaxial cable using a crimp-type connection. It features a threaded UHF interface, typically known as an SO-239 connector, which mates with PL-259 male connectors. This connector provides a secure mechanical fit and stable electrical performance, suitable for applications such as amateur radio, CB systems, and general RF communication. It is designed for frequencies up to around 300 MHz and is commonly used in systems where reliable, rugged connectivity is essential.