UHF Plug for LMR-400 and RG-8 Class Cables
The 182130-10: It ships as a two-piece kit — the connector body and a separate ferrule — so the harness builder has everything needed for one termination in a single order code. The UHF interface is a threaded, non-constant-impedance design originally developed for 2-way radio and antenna feeds; this version is rated for continuous operation up to 2.5 GHz, which covers the 70 cm and 33 cm amateur bands, ISM applications at 915 MHz and 2.4 GHz, and land-mobile VHF/UHF repeaters.
Cable Compatibility and Crimp Termination
The 182130-10 is explicitly listed for Belden 9913, 9914, and LMR-400 — all 0.405-inch-diameter cables with a solid or foam PE dielectric and a double-shield construction. The crimp ferrule captures the outer braid and jacket; the centre pin is crimped onto the centre conductor. The shield termination is also crimp, which gives a gas-tight connection that holds up to flex and thermal cycling. For a field technician replacing a damaged connector on a tower or in an equipment cabinet, the crimp tool required is the standard hex die set for RG-8/UHF-size ferrules — no special tooling beyond what a radio shop already carries.
Construction and RF Performance
The body is machined brass with a silver finish — silver provides lower surface resistivity than nickel or tin at RF frequencies, which keeps insertion loss down at 2.5 GHz. The centre contact is also brass with silver plating; the mating cycles are rated at 500, which is typical for a threaded UHF connector used in test or field-swap scenarios. The silver finish does tarnish over time in outdoor exposure, but the threaded coupling nut maintains contact pressure, and the PTFE dielectric prevents moisture ingress along the centre conductor. For a permanent outdoor install, the silver body is often paired with a weatherproofing wrap; for indoor or rack-mount use, the finish holds up fine without additional sealing.