Telegartner 50 and 75 Straight BNC Crimp Plugs. From Telegartner, a range of 50 and 75 BNC straight male cable mount connectors. The crimp plugs have copper nickel gold alloy plated beryllium copper contacts and a PTFE insulator. Featuring a simple bayonet coupling mechanism the BNC plugs can be used up to 4 GHz. Requiring only a quarter turn to connect and disconnect this connection method makes the BNC plug one of the most commonly used RF connectors around. Features and Benefits. Bayonet coupling Up to 4 GHz. Applications. Signal Data Video transmission