The 4FS10-13140/U1050-P/P from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 12485.5 to 13794.5 MHz, Bandwidth 1309 MHz (1dB), Center Frequency 13140 MHz, Upper Rejection 40 dB, Lower Rejection 40 dB. Tags: Cavity Filter. More details for 4FS10-13140/U1050-P/P can be seen below.