The BNC7T-J-P-GN-RA-BH1: Rated to 12 GHz, this right-angle through-hole jack with bulkhead front-side nut mounting mates with standard 75 Ohm BNC plugs via bayonet lock. The gold-plated copper alloy center contact and PTFE dielectric keep the signal path clean across the band.
This is a 75 Ohm connector — not the more common 50 Ohm BNC. Plugging it into a 50 Ohm system creates an impedance mismatch that reflects signal energy, raising VSWR and degrading the link. The 12 GHz max frequency is high for a 75 Ohm BNC; most 75 Ohm BNCs top out around 4 GHz. The PTFE dielectric and gold center contact support that bandwidth without excessive loss.
The bayonet lock provides a quick quarter-turn mate with positive retention, though the bulkhead nut carries the mechanical load.