The QHF-18000-40000-25 from Qualwave is a RF High Pass Filter with Frequency 18 to 40 GHz, Bandwidth 22000 MHz, Insertion Loss 2.7 dB, Rejection 25 dB, Lower Rejection 25 dB @ DC to 17 GHz. Tags: Module with Connectors. More details for QHF-18000-40000-25 can be seen below.