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    Re: Trying to reach Bill Morris (NZ)
    From: Paul Brewer
    Date: 2009 Nov 02, 08:27 +0000

    Hi,
    Have a look at:-
    
    http://www.g4osj.freeserve.co.uk/Electrical%20Diagrams.html
    
    I have placed a circuit of the Mk IX sextants up there, including the battery 
    eliminator which is a resistance network to reduce the aircraft supply from 
    either 12 or 24 volts down to the 3 volts
    which is the bulb voltage. I have not so far been able to source any of these 
    bulbs by the way! So do take care of yours.
    
    The mounting for the case does not have any electrical function, they are just 
    hanging hooks for stowage by the way.
    
    If you can reduce the bubble to zero you do not have a problem .However, if 
    you cannot then you will have to investigate re filling the chamber. Easy 
    enough.
    
    Regards,
    Paul.
    
    
    
    On Sun, 1 Nov 2009 15:17:06 -0500, you wrote:
    
    >BlankI tried to reach you at engineer{at}net.nz but that failed.
    >I found and bought a Mk 9A and have a couple of questions.
    >
    >The cord that plugged into the case's receptacle (when the case was fitted to 
    the prepared spot in the Lanc the mounts made contact with the aircrafts 24V 
    system) has several breaks in the outside cloth wire cover.  The insulation 
    seems to be almost non-existant and I'm positive it would short out.  There 
    is a hole in the insert to permit the removal of a screw & washer to handle 
    'other voltages'??    There is also a battery of Dutch manufacture but it is 
    flat and there are no notations of voltage.  I have spare bulbs but there are 
    no indications of voltage etc.  I'm sure you will have already solved the 
    problem of providing light for night use? 
    >The only other problem I see is making the bubble smaller.
    >I hope this finds you - - I'm starting to run out of time!!!
    >
    >
    >
    
    
    
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