5pcs Brass N Male 50 Ohm Jack To N Female 75 Ohm Plug Straight Rf Attenuator Coaxial Adapter Connector - Connectors - AliExpress
Amazon.in: Buy 50 to 75 OHM Converter Online at Low Prices in India | Reviews & Ratings
50 Ohm BNC Male to 75 Ohm BNC Female Matching Pad Operating from DC to 2 GHz RoHS Compliant
Amazon.com: Fancasee Universal FM Antenna 75 Ohm F Male Push On Plug Coax Coaxial Cable Antenna with PAL 3.5mm BNC Jack Connector & 75 to 300 Ohm Adapter FM Radio Antenna for
50 Ohm SMA Male (Plug) to 75 Ohm F Female (Jack) Adapter, Nickle Plated Brass Body,
50 Ohm SMA Female to 75 Ohm F Male Adapter
ethernet - Effects of impedance matching between 50 and 75 Ohm coaxial cables for 10 Mbit/s, Manchester-coded signals (20 MHz) - Electrical Engineering Stack Exchange