2pcs Rf Electrical Wire Terminal Adapter Connector Tnc Female to Sma Plug for Wireless Antenna TNC connector has a 50  impedance and operates best in the 011 GHz frequency spectrum. It has better performance than the BNC connector at microwave frequencies. Invented in the late 1950s and named after Paul Neill of Bell Labs and Carl Concelman of Amphenol, the TNC connector has been employed in a wide range of radio and wired applications The SMA interface is a connection, also known as an SMA connector. Suitable for applications in the microwave range up to 26.5GHz. Applications such as telecommunications, networking, wireless communications, and inspection and measurement instruments. Used as a connection for RF signals It has a frequency bandwidth, excellent performance, high reliability, long life characteristics application for Antennas, Wireless LAN Devices , Coaxial cable, Wi-Fi Radios External Antenna and so on RF Adapter connector 50ohm