I asked my husband about the early manufacturers of radar equipment in Massachusetts since he has a background in old radios and owns old military gear and tube testers as well as being an electronic engineer for HP. I thought I'd share his comments for whatever they're worth on the topic. Sandy Note: forwarded message attached. Sandra Lee Blakley 336 South 30th St. Philomath, OR 97370 541-929-2259 --------------------------------- Never miss a thing. Make Yahoo your homepage.