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Building a communication device Answered

Hey guys - I was wondering if anyone could point me to any instructables or other how-to's that teach you how to build a device that can communicate over the air over a given frequency? I've searched around a bunch but I can't really find anything. (I'm also completely stupid when it comes to this kind of stuff.)

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LasVegas (author)2007-02-09

Well... There's this instructable: Build a computer controlled radio transmitter

That does exactly what you're asking. Another device that can communicate over the air, over a given range of frequencies, would be your mouth.

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