75 Ohm 1.0/2.3 Jack — 4 GHz Ceiling, 500-Cycle Gold Interface
The brass body carries a gold finish, and the push-pull fastening gives a positive engagement without threads.
What the 75 Ohm Rating Means for Your Signal Path
75 Ohm is the standard impedance for video, broadcast, and CATV distribution — not for wireless or RF test equipment, which is almost universally 50 Ohm. If you drop this jack into a 50 Ohm system, the impedance step will cause a reflection at the junction, eating into your signal budget above a few hundred MHz. The 4 GHz bandwidth is plenty for HD-SDI (3 GHz) or DOCSIS upstream carriers, but not for Ku-band satellite IF or 5G mid-band.
Temperature Range and Build Quality
The PTFE dielectric holds its dielectric constant across that span, so the impedance stays stable. The beryllium copper centre contact retains its spring force after repeated thermal cycles — important for a connector that lives in an equipment rack that heats up and cools down daily.