The HRMA-CF- 16-18 from HRmicrowave is a Band Pass Filter with Frequency 16 to 18 GHz, Insertion Loss 1.5 dB, Upper Rejection 50 dB, Lower Rejection 60 dB, Return Loss 15 dB. Tags: Module with Connectors, Combline Filter. More details for HRMA-CF- 16-18 can be seen below.