{http://www.cambridgeproducts.com/webapp/wcs/stores/Cambridge/images/n.jpg Crimped N-Type connector on coaxial cable} {http://www.ceramaseal.com/reference/ref_figures/n.jpg Male N-Type connector assembly} Connector for [CoaxialCable] types: RG-8/U, RG-9/U, RG-213/U, RG-214/U, RG-225/U The above image shows a clamp-type N connector. Also available are N connectors which require crimping (such as the Pulse brand), and are generally much cheaper. The N connector was invented by and named for Paul Neill of BellLabs. It was the first connector capable of true microwave performance. It was also designed for rugged professional use, and is highly durable and weather-proof (but not water-proof). N connectors have threaded coupling interfaces and are 50 ohms in impedance. There are also 75 ohm versions available, but they will not mate with the more common 50 ohm version. N connectors operate up to 11 GHz in the common 50 ohm impedance design. Although less common, there are also precision versions of the N connector available which operate up to 18 GHz. Applications for the N connector include Local Area Networks (LANs); test equipment; broadcast, satellite and military communication equipment. from (http://www.cambridgeproducts.com/n.htm http://www.cambridgeproducts.com/n.htm) The N-Connector has become somewhat of a standard in professional use from 200 MHz to 11 GHz, since it performs excellently, and terminates natively to [RG-8], [RG-213], and of course [LMR-400]. [NConnector N-Connector] assemblies are available for almost all [CoaxialCable coaxial cable] types. It's standard to wire a cable with __male__ connectors at either end, and use __female__ connectors on antennas and radio equipment.