Planar Monolithics (PMI) Model BRF1370-50-CD-SFF-LK is a band reject filter with center frequency of 1.37 GHz, notch bandwidth of 0.06 GHz, and notch depth of 50 dB. Housing measures 3.25" x 0.77" x 1.0" package with SMA female connectors. https://www.pmi-rf.com/product-details/brf1370-50-cd-sff-lk
