The 7FD10-3750/U500-O/O from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 3430 to 4070 MHz, Bandwidth 640 MHz (1dB), Center Frequency 3750 MHz, Insertion Loss 0.2 dB, Upper Rejection 70 dB. Tags: Cavity Filter. More details for 7FD10-3750/U500-O/O can be seen below.