Winchester’s KINGS® brand 50 Ohm BNC series RF connectors are the most popular miniature size connectors for coaxial cables from .150? to .250? OD. However, designs accommodate .078? to .437? cables. The BNC connector is a 50 Ohm constant impedance connector with a frequency range of 0 to 4 GHz. Coupling is a quick connect/disconnect bayonet, particularly useful in test equipment, and is weatherproof. Items qualified to MIL-PRF-39012 are included in the listings and also appear on the latest QPL list for MIL-PRF-39012.