The HRMA-CF- 1826 from HRmicrowave is a Band Pass Filter with Frequency 18 to 26 GHz, Insertion Loss 2.5 dB, Upper Rejection 50 dB, Lower Rejection 60 dB, Return Loss 15 dB. Tags: Module with Connectors, Combline Filter. More details for HRMA-CF- 1826 can be seen below.