The SF3030AO-1435MHz-A from Dynamic Engineers is a Band Pass Filter with Frequency 1410 to 1460 MHz, Bandwidth 50 MHz / 57 MHz, Center Frequency 1435 MHz, Insertion Loss 4.2 to 5 dB, Upper Rejection 18 to 43 dB. Tags: Surface Mount, RF SAW Filter. More details for SF3030AO-1435MHz-A can be seen below.