The PDSBF4-10R58/12R02- 4D9 from Sainty-Tech Communications Limited is a Switched Filter Bank with Frequency 10.58 to 12.02 GHz, Band 1 10.58 to 10.97 GHz, Band 2 10.93 to 11.32 GHz, Band 3 11.28 to 11.67 GHz, Insertion Loss 9 dB. Tags: Die. More details for PDSBF4-10R58/12R02- 4D9 can be seen below.