The ZXBF-K24+ from Mini Circuits is a Band Pass Filter with Frequency 19.5 to 20.5 GHz, Insertion Loss 5.8 to 6.8 dB, Upper Rejection 30 to 42 dB, Lower Rejection 45 to 51 dB, Power 0.5 W. Tags: Module with Connectors. More details for ZXBF-K24+ can be seen below.