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Mordecai, your question has two parts which can be answered separately. Can you make a signal transmitter without a decoder ? The answer is yes. Transmitters and decoders are two separate things and they don't necessarily have to be used together. A radio transmitter for example is a high frequency oscillator which sends out a signal into the air using an ...


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Something like this comes to mind - http://www.learningaboutelectronics.com/Articles/7414-schmitt-trigger-oscillator-circuit.php Attach your antenna to pin 2, and there you go!


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