The BPF-1850M10-01A from AMCOM Communications, Inc. is a Band Pass Filter with Frequency 1.84 to 1.85 GHz, Insertion Loss = 1.2 dB, Rejection 30 dB @1830 MHz, 70 dB @1825 MHz, Power 100 W, Ripple 0.4 dB. Tags: Module with Connectors. More details for BPF-1850M10-01A can be seen below.