The 4FS10-3120/H300-P/P from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 2894.95 to 3345.05 MHz, Bandwidth 450.1 MHz (0.5dB), Center Frequency 3120 MHz, Upper Rejection 40 dB, Lower Rejection 40 dB. Tags: Cavity Filter. More details for 4FS10-3120/H300-P/P can be seen below.