Jeff,
I don't use newsgroups very often. I hope I have done something taboo by
crossposting. As a matter of fact, there are some interesting links in a
reply in that other group.

Charles, Thanks. Every little bit helps.
Yes, perhaps one of those will work. Electronics is not my strong suit.
I'll have a bit of a time figuring out which one.

Thanks for the replies!

Alp