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lated from the element. It's called the Edison effect and is the basis of the Vacuum tube.
  There are also articles on early military developments of Radar, VHF/UHF Communications, AM SSB and FM modes, special considerations for tubes in Aircraft and many others. I was so fascinated I read them ALL.
   I want to thank Bob Deuel K2GLO for the pictures and past issues. If you want more info on the TCA you can contact BOB who is the Secretary/ Treasurer of TCA at;
bobshir@uswest.net
Or check out their web-page at;
www.tubecolloctors.org

     The past issues will be available at the next meeting or you might send me an E-mail at;
KC7PDI@ARRL.NET

    I know some of you are curious about the tube shown on the cover of their April issue so I decided to include the specifications given on page #14 of this issue.
   " The tube shown is the rare
             UMAC 606.
    The UMAC 060 is an infernal anode, helical beamed phantasatron having a dissipation rating. The unique vacuum in the phantasatron is of the double sucked type permitting a clear view of the non-emitting triple processed prophylac plate. Because of it's unique self flushing construction, this tube will remain usable through out its useful life.
    The grid is constructed of a rare metal Senileium chosen for

    Last months article about "What to do with old Tubes" was highly appreciated by the people from the Tube Collectors Association. So much so that they sent me a complete set of all their past issues of their bimonthly news letter/magazines form 1999 to April 2001. These magazines are available to all member of the Club for their review and I highly recommend them.
    If you are interested in the history of the development of Radio ( Amateur or Commercial) and the beginnings of modern electronics these magazines are a delight. Each one is about 30 pages long and most of the issues are used to expound on the little known history of the Vacuum tube development. Did you know that Thomas Alva Edison discovered that a current would flow from the element of a light bulb to a wire placed close to but inso

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