The 9FS10-3920/U200-P/P from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 3816.75 to 4023.25 MHz, Bandwidth 206.5 MHz (1dB), Center Frequency 3920 MHz, Insertion Loss 1.04 dB, Upper Rejection 65 dB. Tags: Cavity Filter. More details for 9FS10-3920/U200-P/P can be seen below.