The SF3030AO-1030MHz-B from Dynamic Engineers is a Band Pass Filter with Frequency 1027 to 1033 MHz, Bandwidth 6 MHz, Center Frequency 1030 MHz, Insertion Loss 2.7 to 4 dB, Rejection 5 to 50 dB. Tags: Surface Mount, RF SAW Filter. More details for SF3030AO-1030MHz-B can be seen below.