N series connector was developed in the 1940’s. The Type N offered the first true microwave performance. Type N connector was developed to satisfy the need for a durable, weatherproof medium size RF connector with consistent performance through 11 GHz. There are two families of Type N connectors: Standard N (Coaxial Cable) Helical N (Corrugated Cable) Primary applications are the termination of medium to miniature size coaxial cable: RG-58, RG-141,etc. Interface dimensions conformable to the Standards: GB11314-89 MIL-C-3902/MIL STD 348-304 IEC 169-16