The QHF-5500-18000-50 from Qualwave is a RF High Pass Filter with Frequency 5.5 to 18 GHz, Bandwidth 12500 MHz, Insertion Loss 2 dB, Rejection 50 dB, Lower Rejection 50 dB @ DC to 3.5 GHz. Tags: Module with Connectors. More details for QHF-5500-18000-50 can be seen below.