The TM34F-1312-DL40M from Techniwave is a Band Pass Filter with Frequency 1291 to 1333 MHz, Bandwidth 42 MHz, Center Frequency 1312 MHz, Insertion Loss 4 dB, Upper Rejection 5 dB @ F0 ±40 MHz, 18 dB @ F0 ±80 MHz, 28 dB @ F0 +120 MHz, 39 dB @ F0 ±200 MHz. Tags: Surface Mount, Dielectric Filter. More details for TM34F-1312-DL40M can be seen below.