The 9FS10-4120/U200-P/P from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 4013.5 to 4226.5 MHz, Bandwidth 213 MHz (1dB), Center Frequency 4120 MHz, Insertion Loss 1.03 dB, Upper Rejection 65 dB. Tags: Cavity Filter. More details for 9FS10-4120/U200-P/P can be seen below.