The 5FD10-4050/H300-O/O from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 3844.9 to 4255.1 MHz, Bandwidth 410.2 MHz (0.5dB), Center Frequency 4050 MHz, Insertion Loss 0.21 dB, Upper Rejection 40 dB. Tags: Cavity Filter. More details for 5FD10-4050/H300-O/O can be seen below.