TNC Jack for LMR-400 — 50 Ohm, 8 GHz, Field-Terminated
The jack is built for field termination: the shield is crimped and the centre contact is soldered, a combination that gives a reliable, repeatable electrical and mechanical bond without specialised tooling beyond a standard crimp frame and soldering iron.
No impedance-transforming network is needed; the connector is a transparent pass-through in the signal path. The 8 GHz maximum frequency covers the 2.4 GHz and 5 GHz Wi-Fi bands, the 700 MHz to 2.7 GHz cellular range, and ISM bands at 915 MHz and 2.45 GHz. It does not extend into the 10 GHz+ range used by some point-to-point microwave links or satellite downlinks, so confirm your system's highest fundamental frequency before specifying.
Cable Fit: LMR-400 and the Termination Sequence
This jack is listed for LMR-400 cable, a popular low-loss 50 Ohm cable with a solid or stranded centre conductor and a foam polyethylene dielectric. The cable group designation means the connector's inner bore and crimp ferrule are dimensioned for LMR-400's specific jacket diameter and dielectric size.