IPC 137.5MHz-4400MHz Signal frequency generator RF signal source FOR ADF4350BCPZ The signal source is based on ADI's ADF4350BCPZ components produced at the core of broadband frequency source , in conjunction with good TCXO , to ensure that the output spectral purity and frequency stability . ADF4350 output termination has a programmable attenuator , output power can be achieved 0-31dB attenuation , step 1dB, meet routine use .