What is it? Set CCXXVII

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Set number 227 has just been posted:
http://puzzlephotos.blogspot.com /
Rob
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hi all,
1270 umph, i dont know the word for. you take a rope, put it throug this little thing. then you pull at one end of the rope, and it can΄t slip back, even when something is drawing heavily at the other end. "self locking"
1274 hand held microscope or tiny telescope?
the others, hmm, no idea
greetings from germany chris
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1274 dosimeter used to measure exposure to nuclear radiation. The charging unit is missing. They date back to the duck and cover days of the cold war and were part of radilocical survey package issued to the civil defense, hense the CD marking.
Best Regards Tom.
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That's what I thought it might be but didn't know how it worked. Here's and explanation. http://en.wikipedia.org/wiki/Dosimeter Karl
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Yes. It is based on the Leydon jar or electroscope. The device is an air-spaced capacitor, and the rate at which it loses charge depends on the electrical conductivity of the gas inside. Exposure to ionizing radiation ionizes the gas (doh!) making it more conductive. Usually there is a little scale inside viewable through the lense so that it may be read directly.
They were still used as late as the 1980s as they could be directly read without any processing unlike a film badge or crystal dosimeter.
I should say they were still used in the US. The Soviets pretty much never used them which is why the lost as many people a they did at Chernobyl. $10.00 each, dirt simple technology to save a life.
--
FF


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On Thu, 10 Apr 2008 21:10:08 -0700 (PDT), Fred the Red Shirt

I have several sets of these, along with other rad detectors, which I keep in working shape.
Gunner
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    I've got a couple of related ones. They have the HV friction charger built-in. One holds a charge nicely, the other leaks down fairly quickly.
    Enjoy,         DoN.
--
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wrote:

Friction Charger? Ive never seen one of those
Gunner
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wrote:

I have seen the piezo charger but never seen one with a buit-in charger. Could you post a pix of your unit don ? I would really like to see what one looks like.
If anyones intrested heres a link to what the hand held piezo charger looks like, it the one with the handle you squeeze.
http://www.civildefensemuseum.com/cdmuseum2/radkits/cdv750/cdv750s.jpg
Best Regards Tom.
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Now thats way cool! Ive got a couple of the CD survey "kits", 3 different rad counters, plus dosimeters and whatnot in each, ...and buying lithium ion D batteries (long long term storage) got really expensive
Gunner
"[L]iberals are afraid to state what they truly believe in, for to do so would result in even less votes than they currently receive. Their methodology is to lie about their real agenda in the hopes of regaining power, at which point they will do whatever they damn well please. The problem is they have concealed and obfuscated for so long that, as a group, they themselves are no longer sure of their goals. They are a collection of wild-eyed splinter groups, all holding a grab-bag of dreams and wishes. Some want a Socialist, secular-humanist state, others the repeal of the Second Amendment. Some want same sex/different species marriage, others want voting rights for trees, fish, coal and bugs. Some want cradle to grave care and complete subservience to the government nanny state, others want a culture that walks in lockstep and speaks only with intonations of political correctness. I view the American liberals in much the same way I view the competing factions of Islamic fundamentalists. The latter hate each other to the core, and only join forces to attack the US or Israel. The former hate themselves to the core, and only join forces to attack George Bush and conservatives." --Ron Marr
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    I would be glad to -- if I could find them. Right now, they are in the metal housing with the serious Navy surplus Geiger Counter (more ranges than the little CD ones, and a separate hand-held probe for the more sensitive ranges. (There is a second, smaller, tube inside the housing just behind a dimple designed to mark its location.)
    Anyway -- I'll try my hand at ASCII graphics to show what they are like. Be sure to view with a fixed pitch font (like Courier) to avoid image distortion. +----------+ ++----------------------------------+ | || | | <--- Glass/Quartz ++----------------------------------+ | Window ^ +--+| | | +| || | Eyepiece / +| || | Knob----------- +--+| | +----------+
The knob is threaded onto a flange on the housing. You unscrew it about a turn and it pops out a short distance. Once you have done that, turning clockwise moves the pointer towards zero, and turning counter clockwise moves it towards full scale (500 mR IIRC). Once you have reached zero, press in with your thumb on the raised center portion of the knob, and turn it clockwise to thread it back onto the flange so bumping it won't change the reading.
    The whole thing is painted black, except the maker's label, and a stainless steel spring clip to hold it in your pocket on the opposite side of the housing at the big end.
    The housing is not square when viewed from the end, but rather two semi-circles joined with straight lines.

    I suspect that the one at the lower-left with the pot-metal knob and the one in the bottom middle with the black knob work in a fashion similar to mine. But they are a lot larger. I guess that these were for people who knew enough not to reset the one they were wearing in the middle of an operation. :-)
    Speaking of CD -- are there still CD markers on any modern AM radio dials? :-)
    Enjoy,         DoN.
--
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wrote:

Nope - they quit that in the 70's.
We don't have to worry about a swarm of Russkie Bombers coming over the Polar Route "DEW Line" using commercial AM Radio stations for Radio Direction Finding to home in on our big cities and deliver us a "Nookular Present" - they have GPS now, and even dead reckoning can be done much better.
Synopsis: The whole idea behind "CONtrol of ELectronic RADiation" was that ALL broadcast TV and radio stations, aircraft beacons, Ham, Public Service and Business two-way radio would shut down. Total Radio Silence, all bands. No fixed point signals to home in on.
And many of the larger AM radio stations would have hot TX crystal ovens and pre-tested tower tuning points (the red-painted spots on the loading coils and tuning knobs) for quickly switching over to either 640 or 1240 KHz non-directional.
The only radio you would hear would be the regional Civil Defense emergency instructions as the various stations all swapped off transmitting them round-robin every few minutes, not announcing call signs or locations.
RDF doesn't work worth beans if they can turn off every signal you could use, and the few that remain shift location by 25 miles or more in a random pattern every 3 minutes.
--<< Bruce >>--
PS: Hold the flames. Yes, I realize that even back then when they treated the Cold War seriously there is no WAY they could get 100% of the transmitters turned off for hours - they'd have to send someone out to the hilltop repeaters and rural translators and physically cut the cords, and search out the saboteurs sending homing signals... But CONELRAD was still a sound idea - /for it's time/.
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    It is a cylinder turned by a knob which turns inside a dissimilar material to generate a high voltage static charge (very low current however). It is sort of like rubbing a glass rod with silk to generate high voltage sparks.
    How do the separate chargers for the ones shown in the puzzle work?
    Enjoy,         DoN.
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wrote:

The ones i have taken apart and studied consist of a transistor oscillator driving a transformer to generate the high voltage which is then rectified and fed into a filter capacitor. As i recall they required a single D cell to work. The problem with the battery operated units is that most of them came with batteries that eventually leaked. When the units were tested upon reciept the people in charge for the most part left the batteries installed eventually corroding the guts of the charger making them useless in the event they were ever needed.
Best Regards Tom.
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    Ouch! They wanted to be "ready". :-)
    It is certainly different from mine, as there was no separate battery so the power had to come from physical energy put into the unit. Luckly, it did not take much energy. :-)
    Enjoy,         DoN.
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They wouldn't work for Chernobyl anyway. They're OK for direct radiation, almost no use for alpha-emitting dust, which is what the practical hazard was after Chernobyl (for anyone outside the "You're screwed anyway, Comrade Hero" range).
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1271 is a device that is slipped over the head and neck of a cow. This prevents her from reaching through barbed wire fences and munching on grass on the other side of the fence.
My Dad also used the device on our milk cows. Since we always fed our milking cows grain when we ran them into the milking parlor he used this device to keep the milk cows from eating more grain by sticking their heads in the feed bunk and taking feed reserved for the beef cattle. The sharp points poke into the cow's neck when she sticks her head in between a feed bunk or wire fence yet when she is locked into a stanchion while milking the points on the yoke won't jab her.
DL
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1274 is a dosimeter like the ones I trained for in 1962-5. This particular model is resettable ("re-chargable" is the right word. It used a tiny version of a electroscope with a static charge to hold two filaments apart in a vacuum. Ionizing radiation would discharge them, and allow the filaments to close together. A graticule showed the dose.).
LLoyd
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"Lloyd E. Sponenburgh" <lloydspinsidemindspring.com> writes:

Yup. Mine has pegged on the high end after 40+ years since 'recharge', just from background.
scott
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1274 is a dosimeter, several of which were part of the typical civil defense shelter gear; there is also a base-unit to reset the dosimeter (not pictured).
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