This simple circuit helps you sniff out RF radiation leaking from your transmitter, improper joints, a broken cable or equipment with poor RF shielding. The tester is designed for the 2-m amateur ...

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 ...

From primitive crystal detectors to today's advanced exponential logarithmic amplifiers, RF power detection has come a long way.

This handheld radio has a little secret. You’re not going to be able to listen to Limbaugh since the original FM tuning circuit has been removed and replaced by a diode detector. Now [Miguel A.

Over the past decade, researchers have made many skin-like medical and environmental sensors. But adding stretchable wireless communication circuits to these sensors has been difficult. Those radio ...