The PDBF-R425/R475 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 0.44 to 0.47 GHz, Center Frequency 0.46 GHz, Insertion Loss [email protected], Rejection =30 dB @0.34 GHz, =30 dB @0.56 GHz, Upper Rejection 30 dB. Tags: Surface Mount. More details for PDBF-R425/R475 can be seen below.