In preparation for testing for my technicians class radio license, I’ve been designing a data modem for my avr chips. The current plan is to use a tuned FM transmitter, driven by an op-amp square wave generator, modulated by a microcontroller. This is an improvement (in both power and computational resources) over the original idea of summing sinewaves on the Tx side and Fast Fournier Transform on the Rx side. Seems pretty wasteful, now doesnt it?
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I liked your article is an interesting technology
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Thank you very much! Hopefully you’ll be interested in some of my newer posts on homebrew radio, robotics, and other general hacking. Thanks for subscribing!