Re: A92: RE: A Radio Link idea (Distance and updated)
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Re: A92: RE: A Radio Link idea (Distance and updated)
In a message dated 9/17/99 7:54:44 PM Eastern Daylight Time,
cbiffle@safety.net writes:
> Nope. *grin*
> Problem here is that you're using analog transmitters to transmit what is
> essentially digital data. The transmitters will not accurately send just
> lows and highs...you're likely to get distortion or static as it rounds off
> the corners of the waves and introduces noise from all the harmonics
> (digital signals, square waves in particular, are a composition of all
> possible harmonics as far as an analog transmitter is concerned).
> What you'd need to have are two transmitters, one for each data line.
> You'd have to modulate the data--that is, have a high (or a low) on one
> line control a tone on one frequency. The reciever would detect the two
> tones (one for each line) and generate the correct signals.
dang it. doesn't sound as easy now.
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