Looking at the Substitution manual, I find that EL34 crosses to 6CA7, 6L6 or a KT77 John WD6FLL Listserver Subscription:listserv at listserv.tempe.gov - "subscribe heath 'name' 'call'" Listserver Submissions: heath at listserv.tempe.gov Listserver Unsubscribe: listserv at listserv.tempe.gov - -"signoff heath"