The HRMA-CF-13.7-13.8 from HRmicrowave is a Band Pass Filter with Frequency 13.7 to 13.8 GHz, Insertion Loss 0.5 dB, Upper Rejection 60 dB, Lower Rejection 60 dB, Return Loss 20 dB. Tags: Module with Connectors, Combline Filter. More details for HRMA-CF-13.7-13.8 can be seen below.