The A65-MH541 from Akon Inc is a Band Pass Filter with Frequency 15.5 to 18 GHz, Insertion Loss 1 dB, Rejection -55 dBc, Upper Rejection -55 dBc, Lower Rejection -55 dBc. Tags: Module with Connectors, Drop-In, Combline Filter. More details for A65-MH541 can be seen below.