The PDSBF4-7R9/12R1-4D9 from Sainty-Tech Communications Limited is a Switched Filter Bank with Frequency 7.9 to 12.1 GHz, Band 1 7.9 to 9.1GHz, Band 2 8.9 to 10.1 GHz, Band 3 9.9 to 11.1 GHz, Insertion Loss 8 dB. Tags: Die. More details for PDSBF4-7R9/12R1-4D9 can be seen below.