The KFF6444A from CTS Electronic Components is a Band Pass Filter with Frequency 1.09 to 1.1 GHz, Bandwidth 10 MHz, Insertion Loss Less than 4.5 dB, Rejection 55 to 67 dB, Power 5 to 50 W. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for KFF6444A can be seen below.