The PDBF-1/1R4-4C3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 1 to 1.4 GHz, Center Frequency 1.2 GHz, Insertion Loss [email protected], Rejection =40 dB @0.6& 2.0 GHz, Upper Rejection 40 dB. Tags: Surface Mount. More details for PDBF-1/1R4-4C3 can be seen below.