Olin Lathrop wrote:

> The easiest transmitter is to have a PIC UART output controll the
> carrier enable of an AM transmitter.  This requires separate peak and valley
> picking in the receiver since the average level can be anywhere from 1/10 to
> 9/10.  

You can work around this if you restrict the 8bit data you send (which
reduces your effective symbol rate of course, but Manchester does that
also).

Gerhard

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