Oh my, I remember Wormald! I have a Mowat sensor that still works, although these days I use an external charger which charges nickel metal hydride batteries, and a 9-volt NIMH battery works quite well. I think it's still the best sensor of its kind, and it's essential for me since I have a hearing loss. It's saved my life more times than I can tell you. Back to the optacon: I found the Main Menu segment of December 18, 2002 in which a brief description of the optacon was mentioned. Jonathan Mosen gives a nice summary of what it does, and I think I'll put it at the beginning of the broadcast. It sure is fun to dig this stuff out of the archives. Mary to view the list archives, go to: www.freelists.org/archives/optacon-l To unsubscribe at any time, just send a message to: optacon-l-request@xxxxxxxxxxxxx with the word "unsubscribe" (without the quotes) in the message subject. Tell your friends about the list. They can subscribe by sending a message to: optacon-l-request@xxxxxxxxxxxxx with the word "subscribe" (without the quotes) in the message subject.