The PDBF-R42/R72 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 0.45 to 0.7 GHz, Center Frequency 0.575 GHz, Insertion Loss [email protected], Rejection =30 dB @0.3GHz, =30 dB @0.9GHz, Upper Rejection 30 dB. Tags: Surface Mount. More details for PDBF-R42/R72 can be seen below.