The BWSBF-13R2/18R5-4 from Sainty-Tech Communications Limited is a Switched Filter Bank with Frequency 13.2 to 18.5 GHz, Band 1 13.2 to 15.3 GHz, Band 2 14.3 to 16.4 GHz, Band 3 15.4 to 17.5 GHz, Insertion Loss 4.4 to 5.3 dB. Tags: Die. More details for BWSBF-13R2/18R5-4 can be seen below.