Frederick,Although the JNL specs show otherwise, would you guess that his cathode is thoriated ? Even if it was, it would not have shown up in the radiation tests, most likely.
BTW, if anyone has "one large" as the gangstas like to say, not to be confused with the reverse wording, then eBay has your tube up for auction:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7529726022&category=58171&ssPageName=WDVW&rd=1 I think you might do better at a Ham-fest...Jones
