"Don Foreman" wrote in message
...
On Thu, 30 Dec 2004 23:55:42 GMT, Andy Asberry
wrote:
The frequency would be one pulse per window. You could generate it
with ethylene oxide or acetylene and oxygen and a spark plug.

Like your idea Don. What kind of frequency would you send out,
vegetable, fruit, or mineral? I'd go for a vegetable.G

Bernd