The Amphenol RF 282139-75 is a 75 Ohm 1.0/2.3 receptacle with a female socket contact — a push-pull, bulkhead-mount connector designed for broadcast video, CCTV, and broadband data equipment where 75 Ohm impedance is standard. The 1.0/2.3 interface is the European-born standard for professional video patching and distribution, distinct from the 50 Ohm BNC or SMA connectors common in RF test gear.
The 75 Ohm Impedance — Why It Matters
At 75 Ohm, this connector is impedance-matched for composite video, SDI, and CATV distribution — not the 50 Ohm world of radio transmitters or test instruments. The 75 Ohm characteristic impedance minimizes signal reflection on coaxial cables like RG-59 or RG-6, which is why broadcast racks and head-end equipment use this interface. The 3 GHz frequency ceiling covers 4K/8K SDI signals and DOCSIS 3.1 upstream bands, though the practical limit in a real patch panel is often lower due to cable losses.
Mounting and Termination — What You Get in the Box
The package includes two pieces: the connector body and a hex nut for bulkhead mounting. There is no lockwasher included — the 282133-75 peer part adds one, so if your panel sees vibration, order that variant or supply your own star washer. The mounting feature is bulkhead front-side nut: you drop the connector through a panel cutout from the front and tighten the nut from behind. The dielectric is PTFE (Teflon), which gives stable impedance across the -40°C to 155°C operating range.
500 Mating Cycles — What That Means on Site
The gold-on-brass body finish resists corrosion in humid head-end rooms, and the push-pull fastening lets you disconnect without tools.