The SF1365AO-127.5MHz-A from Dynamic Engineers is a Band Pass Filter with Frequency 117 to 138 MHz, Bandwidth 21 MHz, Center Frequency 127.5 MHz, Insertion Loss 8 to 9 dB, Rejection 40 to 45 dB. Tags: Surface Mount, RF SAW Filter. More details for SF1365AO-127.5MHz-A can be seen below.