I have no idea how to get in touch with Science Products any longer. They have
no web site. I think they're in Hejna, Pennsylvania but am no longer even sure
of that. Perhaps someone else on the list knows. I don't even know if Tom
Benham is still there but they used to say they would modify anything to talk
but they are very expensive.
Tom
Tom Brennan KD5VIJ, CCC-A/SLP
web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html