The QBF-26000-27000-60 from Qualwave is a Band Pass Filter with Frequency 26 to 27 GHz, Bandwidth 1000 MHz, Center Frequency 26500 MHz, Insertion Loss 1 dB, Upper Rejection 60 dB @28 GHz. Tags: Module with Connectors. More details for QBF-26000-27000-60 can be seen below.