28 May
2009
28 May
'09
4:04 p.m.
David Griffith wrote:
It certainly is of interest. I'd like to get one
of those for
myself. It shouldn't be too terribly hard to homebrew one of these
things into a shoeshine box, right?
"Pennywhistle", Popular Electronics,
March 1976.
If you don't really need a design that old, you might be able to find a
TMS99532 or Am7910 FSK modem chip.
Eric