BKL Electronic RF Adaptors TNC adapter 630429 - BKL 0419550, BKL Electronic manufactures the 0419550 TNC adapter, featuring a TNC plug and N reverse polarity socket. This high-frequency connector is ideal for adapting connectivity in radio frequency applications. It is commonly used in telecommunications and networking equipment. BKL 0419550 TNC Adapter Plug to N Reverse Polarity Socket 1 piece