The TFS1227C from Vectron International is a Band Pass Filter with Frequency 1215 to 1237 MHz, Insertion Loss 1.5 to 3.5 dB, Rejection 28 to 33 dB, Upper Rejection 30 to 33 dB, Lower Rejection 28 to 30 dB. Tags: Surface Mount, RF SAW Filter. More details for TFS1227C can be seen below.