The AMPHENOL RF part 031-203 is a high-quality RF connector. It is a UG-290AU BNC straight panel jack solder cup connector, designed specifically for panel-mount applications. This connector is suitable for use in a variety of RF and telecommunications systems, offering a reliable and secure connection. It has a 50-ohm impedance, making it compatible with a wide range of RF devices. With its solder cup termination, it ensures a strong and durable connection. Whether you are working on professional audio systems, radio equipment, or any other RF application, this AMPHENOL RF connector is a top-notch choice.