Here is a simple RF bug detector that will help you detect spy bugs and can operate up to 2 GHz. Below are some essential things required for this circuit: to cover a large frequency band make a sound ...

Here are the circuit diagrams. Robot/metal detector circuit diagram. Source: Interesting Engineering Build the PCB as shown, with the components required. Then insert the Arduino RF Nano, and the ...

This article presents a defect detection method for diagnosing pseudo soldering problems in radio frequency (RF) circuit components. The algorithm integrates the source reconstruction method with the ...