Quantic PMI Model BR52-10-B/B is a band reject filter centered at 0.052 GHz and rejects frequencies from 0.0476 to 0.0556 GHz with a VSWR of 2.0:1. Precision machined housing and silver plated to provide the highest possible Q. Package size is 2.5" x 1.25" x 1.25" with BNC female connectors in and out.