I believe I ID'ed the tube I have, the Internet didnt have the resources available years ago. It looks identical to the Amperex 6960 or Philips TBW7/8000 and Philips on line spec sheet has all the electrical and water specs. Its only a 6KW Pd tube (-; instead of the 7kw I listed yesterday. Not a bad tube for CW contesters or AM. Carl KM1H