E1 passive impedance adapter 75 ohm 1.6/5.6 jack female to 120ohm twis – Fosco Connect
DUNU 3.5mm Impedance Plug
Amazon.com: Impedance Matching Transformer, Ancable 10-Pack Indoor 75 Ohm to 300 Ohm UHF/VHF FM Matching Transformer Adapter with F Female Jack for Antenna and Coax Cable on TV Receiver Radio Tuner :
Adapter 75 Ohm Type F Jack to BNC Plug – Nemal Electronics