The MF3A1227F20GCA from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 1217.6 to 1237.6 MHz, Bandwidth 20 MHz, Center Frequency 1227.6 MHz, Insertion Loss 1.5 dB, Upper Rejection 7 to 30 dB. Tags: Surface Mount, Monoblock Filter, Dielectric Filter. More details for MF3A1227F20GCA can be seen below.