How on earth could a single transistor form the heart of a radio receiver with enough sensitivity and selectivity to be useful, you ask? The answer lies in an extremely clever circuit: the ...

There are many ways to build a radio receiver, but most have a few things ... up into the VHF range without regard for modulation. The basic circuit is a Schottky diode detector between an antenna ...

There are many receiver options ... You can purchase a basic weather radio for as little as $20. They are sold at most electronics stores, including Radio Shack and Amazon.com.