The HDF1220A1 from Shoulder Electronics is a Band Pass Filter with Frequency 1.21 to 1.22 GHz, Bandwidth 8 to 25 MHz, Center Frequency 1220 MHz, Insertion Loss 2.5 dB, Power 0.001 W. Tags: Surface Mount, RF SAW Filter. More details for HDF1220A1 can be seen below.
