DR-4020AssembleInstructions2021SMDversion操作说明书手册

DR-4020 DUAL BAND QRP DIGITAL RADIO(SMD version)Assemble InstructionsThe kit consists of two PCBs,one for the control board and the other for the mainboard.Allcomponents on the control board have been installed and tested.There are two integratedcircuits and four crystals on the main board are patch components,and the rest are commonleaded components.It is easy to install.There are only four inductors to be adjusted in thekit.It can be worked as long as there is no error in the component soldering,and no componentsissues.