Check the listing for details. RAM Mount Angled Square Adapter Plate for XM & GPS Antennas RAM-348U. Condition: New. Listed at 10.99 USD. Manufacturer Description The RAM-348 RAM Mount Antenna Bracket lets you connect a antenna or GPS with a magnetic base to this plate no hardware required. Manufacturer's Description The integration of electronics into mobile environments is what RAM is all about. Mount your satellite radio receiver and antenna all on a single platform for both ease of installation and use. This antenna bracket works with existing RAM Mounts designed for XM and Sirius receivers and installs easily between the ball base and your satellite radio holder. All necessary hardware is included. With a wide variety of mounting options available, RAM makes it easy to put your satellite radio where it can get the best signal and remain within a safe distance for tuning.