The CER0001A from CTS Electronic Components is a Band Pass Filter with Frequency 824 to 849 MHz, Bandwidth 25 MHz, Insertion Loss Less than 3.8 dB, Rejection 11 to 25 dB, Operating_Temperature 0 to 25 Degree C. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for CER0001A can be seen below.