The HDHDF2441E from Shoulder Electronics is a Band Pass Filter with Frequency 2.4 to 2.48 GHz, Bandwidth 83.5 MHz, Center Frequency 2441.8 MHz, Insertion Loss 2.2 dB, Ripple 1.2 to 3.0 dB. Tags: Surface Mount, RF SAW Filter. More details for HDHDF2441E can be seen below.