RE: Simple AM-band radio transmitter using an Arduino Uno by terrylovejoy

electronics · @terrylovejoy · Mar 2 '18

$0.19

This is a good start for a transmitter, sounds like you need something faster though to be able to form proper sinusoidal waves.   Then you'd need to use a PWM function to drive the levels in the wave.  Probably not what this Arduino was designed for, but looks like a fun project!

👍 terrylovejoy, proteus-h

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properties (23)vote details (2)

It'd only take a few additional parts to massively improve the transmitter. A tuned LC circuit can filter out all of the non-1MHz harmonics and feeding the output to a transistor base should amplify the signal considerably. Might even be able to add voice with another transistor further down.

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