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    Re: MD-1 automatic astrocompass
    From: Paul Hirose
    Date: 2003 Jan 27, 10:29 -0800

    Brooke Clarke wrote:
    > Also I'm interested in learning what the input and output signals are on all 
    the electrical connections to the MD-1 automatic astro
    > compass star tracker .  I 
    think this could be interfaced to a computer eliminating
    > all the rest of the original system, but need to know what all those 
    electrical connections do.  Also would then need all the mating
    > connectors, what are they?  Sorry, but most of the photos have been removed. form the server.
    I hope you have 115 V 400 Hz available and the capability to handle
    synchro signals and drive 400 Hz servomotors. Based on my experience
    with the ASB-9/A and ASB-16 part of the ASQ-38 system, that's my guess
    on what you would need to run the star tracker.
    See if you can get the Air Force technical orders for the system. This
    company might be worth a try:
    Maybe the Air Force Museum could help. They have a large collection of
    flight manuals, but I don't know about avionics tech orders.
    If I were still on active duty I'd research this for you from the USAF
    end. There's an index which cross references part numbers and system
    designations to the applicable tech orders. And just because a gizmo
    is obsolete, doesn't mean the tech orders are gone. In the late 1990s
    I looked up the BC-348 liason radio my father had operated in the
    Korean War years. The TOs were right there in the index, and their
    status was listed as "active".
    I'm not sure how civilians who are not DoD contractors would go about
    obtaining tech orders. If you want to contact the USAF, first thing I
    suggest is downloading the first two or three TOs on this list:
    They explain how the USAF tech order system works, including how to
    find the applicable pubs for a system and how to procure them. Whoever
    you contact will likely have a desk full of work, so the more up to
    speed you are from the get-go, the better your chance of getting good
    By the way, your message used very long lines which made the
    formatting look ugly on my system.

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