The ZXBF-K24+ from Mini Circuits is a Band Pass Filter with Frequency 19.5 to 20.5 GHz, Bandwidth 500 MHz, Center Frequency 20000 MHz, Insertion Loss 5.8 to 6.8 dB, Rejection 30 to 51 dB. Tags: Module with Connectors, Reflectionless Filter. More details for ZXBF-K24+ can be seen below.