BNC-J RF Coaxian Cable Connector - China BNC Connector and L9-J
Amazon.com: Cable Extension Coupler Connects Two Coaxial Video Cables, for Coax F81 (Female to Female) 1GHz Cable TV, and Cable Internet Rated (4 Pack) : Electronics
Aura F-Type Connector RG6/MF100 75 Ohm Screw-on Pack of 10