The CF9738R from MtronPTI is a Band Pass Filter with Frequency 1.217 to 1.238 GHz, Bandwidth 20.0 MHz, Center Frequency 1227.60 MHz, Insertion Loss 1.3 to 2.3 dB, Rejection 27 dB. Tags: Surface Mount, Ceramic Filter. More details for CF9738R can be seen below.