The HRMA-CF- 1922 from HRmicrowave is a Band Pass Filter with Frequency 19 to 22 GHz, Insertion Loss 2 dB, Upper Rejection 50 dB, Lower Rejection 60 dB, Return Loss 15 dB. Tags: Module with Connectors, Combline Filter. More details for HRMA-CF- 1922 can be seen below.