The 4FD10-15520/U500-P/P from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 15188.8 to 15851.2 MHz, Bandwidth 662.4 MHz (1dB), Center Frequency 15520 MHz, Insertion Loss 0.86 dB, Upper Rejection 50 dB. Tags: Cavity Filter. More details for 4FD10-15520/U500-P/P can be seen below.