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    Re: Kollsman periscopic pendulous sextant
    From: Gary LaPook
    Date: 2008 Sep 1, 00:03 -0700

    
    http://www.sourceesb.com/ProdSearch.asp?regid=0&search=328&sname=PNS&type=E&action=search
    
    
    
    gl
    
    On Sep 1, 12:01 am, glap...---.net wrote:
    >  A source for the 6 volt number 328 bulbs for use in the Kollsman
    > sextant
    >
    > -------- Original Message --------
    > Subject:        Distributors of part 328
    >
    > http://www.sourceesb.com/ProdSearch.asp?regid=0&search=328&sname=PNS&...
    >  regid=0&search=328&sname=PNS&type=E&action=search>
    >
    > On Aug 31, 12:27 pm, glap...---.net wrote:
    > > That is exactly what is used with the A-10 sextant, 4.5 volts from
    > > three size "D" batteries. If you have one of the more modern Kollsman
    > > sextants that use an electronic averager you do need to supply 28
    > > volts to the averager since they won't work on less. For use in an
    > > airplane, you can make a 28 volt power suppy with one integrated
    > > circuit and a small amount of soldering. The IC converts 12 volt DC to
    > > 28 volt DC and costs about $25.00. I made one and can find the source
    > > for this IC if anybody wants to do the same. You can also get 27 volts
    > > out of 3, 9 volt batteries wired in series. This works fine for the
    > > lights but the averager uses about 150 ma so these betteries don't
    > > last long powering up the averager. And they are expensive.
    > > You can also replace the 28 volt bulbs, or in your case the 3 volt
    > > bulbs, with 6 or 12 volt bulbs that are the same size and power them
    > > up with other battery combinations or with a cable to your lighter
    > > socket in the plane. If anybody needs the source for these other bulbs
    > > I can find it again. I think I posted all of this information on bulbs
    > > and on the IC about a year ago so you can probably search the archive
    > > for it also.
    >
    > > gl
    >
    > > On Aug 31, 6:56 am, werner  wrote:
    >
    > > > Actually my Kollsmans are Euopean license builds (1 from Kollsman-
    > > > Germany and the other 2 from Kollsman-UK, and had been used in the
    > > > respective air forces). Those sextants have a 3 Volts lighting system.
    > > > 28 Volts only go into the gimbal aircraft mount. Within it the voltage
    > > > is transformed into 3 Volts to go into the sextant. The usual method
    > > > (when not installed in an aircraft) is to use a modified flashlight
    > > > (instead of the bulb there is a connector for a cable) with 3 D-cells
    > > > (flashlights were provided in the storing case).
    >
    > > > Werner
    >
    > > > On 31 Aug., 04:49, glap...---.net wrote:
    >
    > > > > BTW, if you need a 28 volt power supply for using your sextant at home
    > > > > just go down to Home Depot and buy a water sprinkler system electric
    > > > > transformer which puts out 28 volts and is cheap.
    >
    > > > > gl
    >
    > > > > On Aug 27, 12:12 pm, werner  wrote:
    >
    > > > > > Hi,
    > > > > > Has anyone a manual for this sextant? I need one for the "non-bubble"
    > > > > > type, but with the pendulum. I have three of these sextants (two good
    > > > > > ones, one needs overhaul).
    >
    > > > > > Thank you.
    >
    > > > > > Werner
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