The SF3030AO-1030MHz-A from Dynamic Engineers is a Band Pass Filter with Frequency 1025 to 1050 MHz, Bandwidth 10 MHz, Center Frequency 1030 MHz, Insertion Loss 3 to 4 dB, Rejection 30 to 42 dB. Tags: Surface Mount, RF SAW Filter. More details for SF3030AO-1030MHz-A can be seen below.