TNC (Threaded Neill-Concelman) connectors are threaded coaxial connectors that are designed to provide a highly secure signal transmission that is resistant to vibration and weather. While often considered a threaded version of BNC connectors, TNC connectors operate up to 11. which is a substantially higher frequency than most BNC connectors. They are available in 50 Ohm or 75 Ohm impedances. TNC connector applications include wireless, satellite, and cellular networks, GPS, antennas, and industrial RF equipment.