The 4FS10-2443/T30-O/O from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 2399.05 to 2486.95 MHz, Bandwidth 87.9 MHz (3dB), Center Frequency 2443 MHz, Upper Rejection 65 dB, Lower Rejection 65 dB. Tags: Cavity Filter. More details for 4FS10-2443/T30-O/O can be seen below.