Hi,
the ideal decoder device of DTMF is the MT8870. It is cheap, reliable,
etc. I use it with PIC. 4 data and 1 IT lines are sufficient if I
recall...
I hope this helps.
Imre


On Thu, 17 Dec 1998, Harrison Cooper wrote:

> OK, I admit I wasn't paying much attention to the thread when it was
> going around.  So, forgive me for asking, did anyone keep the final
> outcome of this?  What about STAMP II apps for this maybe?
>
> I want to build a decoder for both DTMF and single tone frequencies,
> so I can attach to my scanner or HT when the local ARES group sends
> a call out...
>
>