The 01S1149-00 from Waka Manufacturing is a Band Pass Filter with Frequency 27 to 29 GHz, Bandwidth 2000 MHz, Center Frequency 28 GHz, Insertion Loss 6 dB, Rejection -30 dB @ 21 to 24 GHz. Tags: Module with Connectors. More details for 01S1149-00 can be seen below.