If you enjoy building radio projects you may have noticed something ... Fortunately a variable capacitor is a surprisingly simple device, and one you can make yourself if you are of a mind to ...

There are many ways to build a radio receiver ... digging and found a dead-simple circuit that can receive signals from the medium-wave bands up into the VHF range without regard for modulation.

PITTSBURGH, March 27, 2025 /PRNewswire/ -- "I thought there could be a simple solution for the current problem of not having a completely closed circuit radio communication system," said an ...