The BWSBF-17R5/31R1-3 from Sainty-Tech Communications Limited is a Switched Filter Bank with Frequency 17.5 to 31.1 GHz, Band 1 17.5 to 22.5 GHz, Band 2 21.5 to 26.7 GHz, Band 3 25.7 to 31.1 GHz, Insertion Loss 4.2 to 4.3 dB. Tags: Die. More details for BWSBF-17R5/31R1-3 can be seen below.