The Comprehensive Cables B-BLCM is a passive, chassis-mount barrel adapter designed to provide a secure and reliable connection between two BNC cables with male connectors. This adapter features a female BNC jack on both ends, allowing it to function as an inline coupler or extension when mounted to a panel, bulkhead, or equipment chassis. It is engineered specifically for 75-ohm video signal applications, making it a critical component in professional broadcast, surveillance, medical imaging, and test & measurement systems where maintaining proper impedance and signal integrity is paramount. The chassis-mount design enables a permanent and organized installation, reducing strain on cables and preventing accidental disconnections.

Constructed with a central brass or nickel-plated body and a robust metal shell, the B-BLCM adapter ensures precise 75-ohm impedance matching to minimize signal reflections and loss, which is especially important for high-frequency signals like HD-SDI or analog video. The chassis mount is typically secured with a nut that fastens from the rear of the panel, holding the adapter firmly in place. This setup provides a professional, finished appearance and enhances the mechanical stability of the connection point, which is essential in environments subject to vibration or frequent cable handling, such as production trucks, equipment racks, and control room patch panels.

Installation involves drilling a correctly sized hole in the chassis panel, inserting the adapter, and tightening the retaining nut. Once mounted, it serves as a fixed connection port, allowing BNC cables to be plugged in from either side. This adapter is an indispensable tool for extending cable runs, interfacing between equipment with hard-to-reach ports, or creating custom patch bays. By offering a high-quality, impedance-correct coupling point, the Comprehensive Cables B-BLCM barrel adapter helps maintain the performance and reliability of professional video and RF signal chains.