RP-BNC Plug, 50 Ohm, 4 GHz — What the Interface Means
The 112563RP: The RP-BNC interface swaps the gender of the centre contact relative to standard BNC — the plug carries the female socket, and it mates with an RP-BNC jack that has the male pin. This is the standard interface for Wi-Fi and ISM-band equipment where the manufacturer wants to prevent accidental mating with standard BNC antennas. The 4 GHz ceiling covers the 2.4 and 5 GHz bands with margin, and the 0.2 dB insertion loss at those frequencies is typical for a crimp-style BNC-class connector.
Cable Fit — LMR-400 and the Listed Cable Group
The 112563RP is spec'd for Belden 8214, 9913, 9914, and LMR-400 — all 0.405-inch-diameter 50 Ohm cables with a solid or stranded centre conductor and foam PE dielectric. The crimp termination uses a separate ferrule (included in the 3-piece kit) for the braid shield, and the centre contact crimps onto the centre conductor. If you are terminating LMR-400, this connector is a direct fit; no adapter or cable-prep change is needed. The base product number 112563 without the RP suffix is the standard-polarity version with a male pin — the only difference is the centre contact gender, not the cable fit or the crimp tooling.
Build and Duty — 500 Cycles, PTFE Dielectric, Full Temp Range
The bayonet lock (BNC-style) gives a quarter-turn mate with positive detent; it is not a threaded interface, so it is faster to connect but relies on the detent spring for vibration retention. For a fixed installation that will not be unmated repeatedly, the bayonet lock is adequate; for a mobile or high-shock environment, a threaded interface like Type-N would be the safer call.