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  1. Gramps

    Dossimeter + charging unit

    My dose meter charger uses a 1-1/2 volt "D" cell, but yours has a crank generator, very cool . The little generator simply is stepped up to several hundred volts and puts a charge on the dose meter. When radiation strikes the meter it discharges slowly and that's where you get your reading. The...
  2. Gramps

    Dossimeter + charging unit

    Very nice find Darren! There's no danger of radiation here. Pop her open and get us some photos!
  3. Gramps

    Mystery box

    We didn't get any CB equipment in that donation and have no way to contact family or friends. What we did get was two telescopes one quite expensive one but I didn't see any motorized racking gear on it
  4. Gramps

    Mystery box

    If it was "hollowstate" technology I probably would keep it :-)
  5. Gramps

    Mystery box

    Would be glad to donate them to anyone who wants to pay the postage to receive them. Don't have much time for tinkering with electronics anymore sad to say A little history on these items. I'm on the staff at the Fort Myers Rescue Mission the homeless shelter in Fort Myers. These two items...
  6. Gramps

    Mystery box

    I have a second unit that might be somehow connected to the first one. Again completely hand-wired here are some photos
  7. Gramps

    Mystery box

    Now I see you what you're talking about. The red stickers you see under the unit are a prop that I used to prop it up so we could photograph it
  8. Gramps

    Mystery box

    An one of the trans.
  9. Gramps

    Mystery box

    Thanks for all the input. For some reason I'm not getting notified that you all posted. I don't see any red stickers on the front panel only penned in numbers. Here a pic of the transistors
  10. Gramps

    Mystery box

    Good morning anybody have any idea what this thing is? I'm guessing radio amateur gear, it's designed to control something, perhaps a telescope? Gramps
  11. Gramps

    TV Camera project

    Thanks electricianrar for the suggested sites. Yes, we already have been there. Gramps
  12. Gramps

    TV Camera project

    Problem solved Problem solved. We found this personal TV with a 5 inch screen at he thrift store for $4.75: http://www.ebay.com/itm/VINTAGE-PERSONAL-BLACK-WHITE-TELEVISION-GPX-5-PORTABLE-GRAN-PRIX-MODEL-TVP4-/330849679981?pt=Televisions&hash=item4d082d7a6d so we don't have to use the...
  13. Gramps

    TV Camera project

    Thank you so much for all the input! In the good ol’ days, vacuum tubes and diodes were the only active elements available to accomplish amazing feats of electronic magic. Sad to say that day has passed, where you could actually see and touch the components . The new digital black boxes now...
  14. Gramps

    TV Camera project

    Hello! Building an all tube TV camera. Recently we acquired a Toshiba 140CYB31 CRT to use as the monitor. The tube came out of a heart defibrillator that went to the recycle dump before I could look at it. Have Google-d to no avail. Can anyone point me in the right direction to find the...
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