The 13FD10-3125/T250-P/P from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 2991 to 3259 MHz, Bandwidth 268 MHz (2dB), Center Frequency 3125 MHz, Insertion Loss 1.09 dB, Upper Rejection 40 dB. Tags: Cavity Filter. More details for 13FD10-3125/T250-P/P can be seen below.