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    #1

    Reticle illumination

    Does anybody know what Voltage the reticle illumination system is?
    ( for the 80 degree 10x80 bino)

    The bulb is ancient and maybe even ww2 era, metal surface oxidized and ( if any) script unreadable.
    The filament is intact though!
    It would be good to know the Voltage, maybe even Wattage, of the bulb before the screwdriver appears..

    I need to disassemble the system and remove oxidation on the various contact areas.

    Last edited by Lauritz; 08-14-2020, 10:34 PM.
    Tags: None
    #2
    I'm not sure but you could stick a battery against it and work it out (trying lowest power first).

    I did this with my P61 "Black Widow" nightfighter binocular sight and the original wartime Mazda bulb lit up first time (9 volts I think).

    For some reason, the bulb lighting up the reticle gave me a great sense of joy....
    • 1 like

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      #3
      Most batteries were 4,5 Volts. See the following link. You've got plenty info about reticle lamps and batteries there:

      https://dev.wehrmacht-awards.com/for...r-reticle-lamp

      Carles

      Comment

        #4
        Fantastic, super! Many thanks!
        lots of excellent info!
        I thought the bulb was 1.5 V!
        I will today try to find batteries of that size. Have not seen that size for decades though.

        The battery size or type seems to be called 3336 ( or 3R12)
        That explains the position of the + and - inside the battery box!

        Sgt Bilco, I am too afraid to burn the bulb. Putting a lower voltage will light it up, but faintly. Yes, it gives you a sense of great satisfaction to make old stuff functional again!

        I might try to find a new bulb too, it would be a shame to damage the old one.
        If I can find one.
        Not easy to live on an small island!
        Last edited by Lauritz; 08-15-2020, 08:06 AM.

        Comment

          #5
          Well, no bulbs of this voltage and thread, or batteries of this sort, on island. As expected, so not disappointing really.
          As usual I will make FedEx and customs happy.

          Comment

            #6
            Me6_130;
            do you still have any newly made ’covers’ for the flat 4.5V Battery for sale?
            It looks like I need to import some adapting ‘cases’ to convert AA batteries to this 3r12 size, and it would be nice to visually make them look ‘correct’!
            I need 3 pieces
            Last edited by Lauritz; 08-15-2020, 01:11 PM.

            Comment

              #7
              Originally posted by Lauritz View Post
              Me6_130;
              do you still have any newly made ’covers’ for the flat 4.5V Battery for sale?
              It looks like I need to import some adapting ‘cases’ to convert AA batteries to this 3r12 size, and it would be nice to visually make them look ‘correct’!
              I need 3 pieces
              Hello,

              I found mail doesn't let me send batteries abroad so I developed the covers. I don't have any right now but I can make some for you, just PM me and let's talk about it.

              ​​​​​​​Carles

              Comment

                #8
                Hello,

                You can find some battery adapters at Ebay:

                https://www.ebay.de/itm/Batterie-Box...53.m1438.l2649

                Perhaps there are some cheaper, or in black. Hope it helps.

                BTW, some of my bulbs are 3,5v and some are 4,8v.


                Carles

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