The 6MB/C-1250/U140-18 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 1171.2 to 1328.8 MHz, Bandwidth 157.6 MHz (1dB), Center Frequency 1250 MHz, Insertion Loss 1.66 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 6MB/C-1250/U140-18 can be seen below.