I have a HW 101 and replaced drive belts.working fine now. Is there any mod . to use JAN 6146W tubes in it?? Sor far tunning 100 watts SSB ,sounds great,, Robert Meyer 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"