The PDSBF-3/20-4 from Sainty-Tech Communications Limited is a Switched Filter Bank with Frequency 3 to 20 GHz, Band 1 3 to 5 GHz, Band 2 5 to 8 GHz, Band 3 8 to 13 GHz, Insertion Loss 9 to 10 dB. Tags: Die. More details for PDSBF-3/20-4 can be seen below.