Handheld Transmitter, 1500 ft, 1 Chan.

[Music] so [Music] in this video i'm going to show how to build an am transmitter that can be heard on a regular handheld radio or in your car to understand how to build an am radio first you need to understand how amplitude modulation works you start off with a carrier wave which is just high frequency alternating current running up and down a conductor as electrons are accelerated they release photons which travel outward as waves with a certain frequency for this video i'm using one megahertz the carrier wave by itself doesn't carry information so if we want to send a signal we'll have to superimpose it on top of the carrier wave to vary its strength over time which results in a modulated carrier wave that's actually sending some information in my case i'm going to transmit a square wave so my input signal would look like this but the output of the transmitter would look like this on