AM Radio with wireless Loop Antenna
This shows a wireless non- powered “Loop Antenna” that enhances the reception of my homemade AM radio. This one is my own design but other designs may be found here on Youtube. It is a very old idea. All it is a coil of wire connected in series with a variable capacitor. It really work well and uses no batteries. There is no attachment to the radio other than a wireless inductive link between external antenna and the internal radio antenna.