The 9FS10-4220/U50-P/P from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 4187.05 to 4252.95 MHz, Bandwidth 65.9 MHz (1dB), Center Frequency 4220 MHz, Insertion Loss 2.45 dB, Upper Rejection 80 dB. Tags: Cavity Filter. More details for 9FS10-4220/U50-P/P can be seen below.