This SAW filter for the receiving RF circuit of digital mobile communication equipment operating at 1477 MHz ~ 1501 MHz. MF1117V-2 TYPICAL CHARACTERISTICS Insertion Loss vs. Frequency 1 dB / REF 0 dB Attenuation vs. Frequency CH1 S21 log MAG 5 dB / REF 0 dB [dB] 0 *1 *2 *3.