The 5FD10-20550/U600-P/P from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 20083.5 to 21016.5 MHz, Bandwidth 933 MHz (1dB), Center Frequency 20550 MHz, Insertion Loss 0.44 dB, Upper Rejection 35 dB. Tags: Cavity Filter. More details for 5FD10-20550/U600-P/P can be seen below.