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    Philips 5814 - 12AU7

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    Tom

    Posts : 173
    Join date : 2011-04-04

    Philips 5814 - 12AU7

    Post by Tom on Thu Jan 09, 2014 8:05 pm

    I work on Govt Property pretty often and was at a super duper RADAR site recently.
    In the storeroom there were STACKS of JAN 5814 tubes, all NOS.
    I asked the tech, "What are these for?", and he says "some of the RADAR amps use them and we horde them"

    "They don't make them like this anymore!!"

    And I though it was just us...

     Very Happy 
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    arledgsc

    Posts : 403
    Join date : 2012-11-30
    Location : SF Bay CA

    Re: Philips 5814 - 12AU7

    Post by arledgsc on Fri Jan 10, 2014 8:42 am

    Interesting that the gov. still uses equipment with tubes.  But I heard that vacuum tubes are impervious to EMPs (electromagnetic pulses) generated by nuclear explosions so can see why they are still around.   There are probably 1,000s of tubes still locked away such installations.  Thanks for sharing.
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    sKiZo

    Posts : 1379
    Join date : 2013-04-01
    Location : Michigan USA

    Re: Philips 5814 - 12AU7

    Post by sKiZo on Fri Jan 10, 2014 6:07 pm

    I saw a documentary recently that covered the nuclear command post ...



    The Boeing E4 is based on a 747 airframe, but the tech goes back to the B52 stratofortresses. As you mentioned, it's mostly to get around EMP that could kill contemporary systems. They mentioned something like 28 different radar and tracking systems in the upper fuselage bubble for backup and redundancy.

    Wouldn't be surprised to find a few tubes in there somewhere. Probably not in the entertainment center - this ain't like Air Force One ... real utilitarian workhorse it is. Interior is also a bit cramped due to the additional shielding ... unlike the TARDIS, these are much smaller on the inside.  tongue

    Tom

    Posts : 173
    Join date : 2011-04-04

    Re: Philips 5814 - 12AU7

    Post by Tom on Fri Jan 10, 2014 9:14 pm

    ^The "Doomsday Plane".
    Smile
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    Maintarget

    Posts : 217
    Join date : 2013-02-10

    Re: Philips 5814 - 12AU7

    Post by Maintarget on Fri Jan 10, 2014 9:45 pm

    Tom how could you tell is Obama on it Laughing

    Tom

    Posts : 173
    Join date : 2011-04-04

    Re: Philips 5814 - 12AU7

    Post by Tom on Sat Jan 11, 2014 5:36 am

    Maintarget - I think we're supposed to stay away from politics on this forum
    and find your comment inappropriate. Sorry.

    An Airborne Command Post shadows Air Force One and parks at a local AF base
    when the President is in town. I don't know if the "Doomsday Plane" nickname is local
    but that's what I've heard it called. You're not allowed to take pics of it on base
    but you can see it clearly from the highway and there are plenty of photos on the internet.
    It's hard to hide a parked 747.
     Wink 

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