The ADFM 1850/60-13.5A from ADMOTECH is a Band Pass Filter with Frequency 1.82 to 1.88 GHz, Bandwidth 60 MHz, Insertion Loss 1.1 dB, Power 100 W, Return Loss 20 dB. Tags: Module with Connectors, Cavity Filter. More details for ADFM 1850/60-13.5A can be seen below.