28 May
2009
28 May
'09
6 p.m.
On 28 May 2009 at 19:10, Dave McGuire wrote:
I don't recall what the Pennywhistle used. Was it NE567s or am I
thinking of another hobbyist modem design?
--Chuck
If you
don't really need a design that old, you might be able to
find a TMS99532 or Am7910 FSK modem chip.
An eBay seller has a number of TMS99532s available at $2.75/ea,
item # 110376664450.