The APH-BNCJ-HDBNCP from Amphenol RF is a BNC Jack to HD BNC Plug Adapter that operates from DC to 3.5 GHz. It has a return loss of -25 dB and is matched to 75 Ohms. The adapter operates at a temperature from -65°C to 165°C. It has a brass, nickel plated body, a BeCu contact with gold plating and a PTFE insulator.