[TriLUG] Piece of History

[William Sutton]

I think you win, sir.

William Sutton


On Fri, 22 Feb 2008, John Mitchell wrote:

> On Fri, Feb 22, 2008 at 5:15 PM, Justis Peters <jtrilug at indythinker.com> wrote:
>>  Does anybody have the ace?  Acoustic coupler with less than 300 baud
>>  wins the round.  Unless there's a trump card or a joker I've never heard of.
>>
>
>   Well, I built my first modem, it was 300 baud, and built the
> acoustic coupler for that. The Transmitt PCB was from Jamco and used a
> 555 timer IC to switch the two tones. The Receive had a bandpass
> filter that drove a 2nd PCB from Jamco wired in reverse.
>   Early 1978 I think.
>
> john mitchell
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