Reverse-Polarity TNC for 1.13 mm Coax
The Amphenol 031-6900 is an RP-TNC jack with a male center pin — the reverse-polarity variant of the standard TNC interface. It is designed specifically for 1.13 mm coaxial cable, terminated by crimping the shield and soldering the center conductor. The bulkhead rear-side nut mounts through a panel, and the threaded coupling nut provides a vibration-resistant mate.
IP67 Sealing and Temperature Range
Gold-plated phosphor bronze center contact resists corrosion through 500 mating cycles.
This connector is built for 1.13 mm coaxial cable — the crimp barrel and center-contact solder cup are sized to that diameter. Using a different cable gauge will not achieve the rated 50 Ohm impedance or the IP67 seal. The shield is crimped; the center conductor is soldered.