The 12FD10-19000/T1000-OP/O from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 18431.45 to 19568.55 MHz, Bandwidth 1137.1 MHz (3dB), Center Frequency 19000 MHz, Insertion Loss 1.27 dB, Upper Rejection 60 dB. Tags: Cavity Filter. More details for 12FD10-19000/T1000-OP/O can be seen below.