I am looking for a 3"CRT replacement for a Heath monitor scope. The tube # is 3RP1. Any help is appreciated. Bruce AA4Z Sponsored by the City of Tempe Listserver Submissions: heath at listserv.tempe.gov Listserver Subscription: listserv at listserv.tempe.gov - "subscribe heath 'name' 'call'" Listserver Unsubscribe: listserv at listserv.tempe.gov - -"signoff heath"