75-Ohm BNC Plug — 4 GHz, Crimp, Bayonet Lock
The Amphenol 031-80105 is a 75-Ohm BNC plug designed for precision video and data transmission up to 4 GHz. The 75-Ohm impedance matches standard broadcast and CCTV cable infrastructure, not the 50-Ohm RF world — a common swap mistake that kills return loss.
Cable Group and Termination Fit
This plug is listed for cable groups AT&T 735, 735A, and Belden 735A1. If you are terminating RG6 or another 75-Ohm cable, check the outer diameter and dielectric compatibility — the listed groups are specific, and a mismatch in cable diameter or dielectric material will affect the crimp quality and impedance continuity.
Signal Performance — Insertion Loss and Frequency
Insertion loss is specified at 0.2 dB, which is tight for a crimp BNC at 4 GHz.