
Female The F connector is a coaxial RF connector commonly used for `over the air` terrestrial television, cable television and universally for satellite television and cable modems, usually with RG-6/U cable or, in older installations, with RG-59/U cable. It was invented by Eric E. Winston in the early 1950s while working for Jerrold Electronics.....
Found on
http://en.wikipedia.org/wiki/F_connector

An F Connector is a two-wire (signal and ground) coaxial cable connector used to connect RF frequency signals (aerials, televisions and VCRs etc as well as broadband telephony signals). The plug's shell and socket are threaded ensuring a tight connection and reliability.
Found on
http://www.probertencyclopaedia.com/browse/GF.HTM
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