The TFS1188 from Vectron International is a Band Pass Filter with Frequency 1161 to 1189 MHz / 1189 to 1214 MHz, Insertion Loss 2 to 2.5 dB, Rejection 2 to 35 dB, Upper Rejection 2 to 35 dB, Lower Rejection 15 to 30 dB. Tags: Surface Mount, RF SAW Filter. More details for TFS1188 can be seen below.