The KFF6505A from CTS Electronic Components is a Band Pass Filter with Frequency 1.77 to 1.81 GHz, Bandwidth 40 MHz, Insertion Loss Less than 2.3 dB, Rejection 40 to 43 dB, Power 2 to 20 W. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for KFF6505A can be seen below.