The 12FD10-20000/T1000-OP/O from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 19468.15 to 20531.85 MHz, Bandwidth 1063.7 MHz (3dB), Center Frequency 20000 MHz, Insertion Loss 1.52 dB, Upper Rejection 60 dB. Tags: Cavity Filter. More details for 12FD10-20000/T1000-OP/O can be seen below.