22-05-2026, 11:04 AM
There are now even cheap AM transmitter kits on Amazon.
The simplest is not much more than a transistor, 2 to 3V supply (or USB charger) and ceramic resonator. Even one less than 540KHz will be adequate on the 2nd harmonic. An old or cheap AM pocket radio can be easily modified or used for parts.
The simplest is not much more than a transistor, 2 to 3V supply (or USB charger) and ceramic resonator. Even one less than 540KHz will be adequate on the 2nd harmonic. An old or cheap AM pocket radio can be easily modified or used for parts.
