This is basically a crystal radio with an audio amplifier which is fairly sensitive and receives several strong stations in the Los Angeles area with a minimal 15 foot antenna. Longer antennas will provide a... [more]
Designed around the popular ZN414 ic this receiver covers the AM band from 550 - 1600 KHz with the values shown. For Longwave the coil needs to be changed. Use one from an old MW... [more]
The circuit contains four LC tuned circuits, all of which need to be fine tuned to obtain good results. An oscilloscope and RF signal generator are useful, but the circuit can also be setup using... [more]
The electrical diagram of a small portable MW radio receiver, reproduction being done over the headphones [more]
In HF amplifier the signal coming from the radio station is being amplified in its original form. In our case, this means that AM signal is led at input of the HF amplifier, and on... [more]
Listening the programme over the headphones has its advantages, but the true radio receiver is certainly the one that with the loudspeaker. In this project the simplest such receiver is being described, consisting of input... [more]
The Simplest Amplified AM Radio Receiver [more]