Quantic PMI Model 7ID720-400-CD-SFF-GDO is a Bandpass Cavity Filter with a center frequency of 0.72 GHz and a bandwidth of 0.4 GHz. Precision machined housing and silver plated to provide the highest possible Q. Package size is 6.87" x 1.60" x 2.00" with SMA female connectors in and out.