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CDV700CLUB · The CDV 700 Club is a forum for like minded individuals that enjoy collecting, fixing up, and using geiger counters and other r
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Messages 25021 - 25056 of 31435   Oldest  |  < Older  |  Newer >  |  Newest
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25021
Hi, Thought I should let you know about a site called "Anything Radioactive" they have those polonium spark plugs you are looking to acquire, and they are sold...
Steve Kay
armada54
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Nov 1, 2007
7:58 am
25023
They are likely so many times their half life that nothing but the most sensitive detector would detect it was radioactive...Not worth having for its ...
fucian@...
mattrg2004
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Nov 1, 2007
3:40 pm
25025
Once radioactive. Po-210 has a 138 day half life. In 7 half-lives it would be considered dead. Long before that it would have lost so much activity as to be...
Geo>K0FF
K0FF
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Nov 1, 2007
4:19 pm
25026
PROJECTS: Ionizing Radiation Meter A device which electronically indicates the production of ionizing radiation from a typical medical X-ray imaging system....
DH
revtkatt
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Nov 1, 2007
4:39 pm
25027
... Lasers damaging the glass...
DH
revtkatt
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Nov 1, 2007
4:42 pm
25028
... would be considered dead. Not necessarily. If you start with 300 uCi, eg a staticmaster 3" strip, you are still over 2 uCi after its decayed to 1/128th....
DH
revtkatt
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Nov 1, 2007
4:55 pm
25029
Hi guys, This is a memory that hasn't surfaced in a few years. When I was a kid, my dad had this blue flexible plastic disk that said "World's Fair 1964"...
Miki Kanazawa
mikikanazawa
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Nov 1, 2007
6:31 pm
25030
Neutron irradiated, at Oak Ridge, some normal silver converted silver to Ag-110 (22 second H/L). The dime irradiator sometimes went on filed trips, as per this...
Geo>K0FF
K0FF
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Nov 1, 2007
7:11 pm
25031
Just wait, Geo will ask for one with a CDV700 inside it... Nick A...
Nick Andrews
nicothefabulous
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Nov 1, 2007
7:59 pm
25032
In a similar vein, when the Rainier, OR, power plant was still in operation, we visited the visitors' center once. They had a demonstration where a small...
kwcclark
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Nov 1, 2007
8:10 pm
25033
Try this link: http://www.orau.org/ptp/collection/medalsmementoes/dimes.htm BTW, it is a really kewl site, go to the homepage. Chris Cavanaugh cav427@... ...
Chris Cavanaugh
night427
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Nov 2, 2007
12:09 am
25035
If Geo gets them to build one I will buy at least 2, Put CDV-700 in there they might be collector items in 50-100 years. But I always wanted to do a time...
Tracy Albert
thealbert1
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Nov 2, 2007
1:25 am
25036
Not a bad Idea, the CDV700CLUB Time Capsule! Put various radioisotopes, some radiation detectors, and of course a chart of the radioactives activity or...
Chris Cavanaugh
night427
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Nov 2, 2007
1:45 am
25037
I got funds for that project, We are the last of a kind. Next thing we know Mr. spock is going to have an array of scanners on line. Best we lift our...
Tracy Albert
thealbert1
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Nov 2, 2007
2:43 am
25038
... You can do this with a radon source, CDV700, and the CDVCounter windows program, if you have a soundcard input. The Early Scientists measured Pile activity...
DH
revtkatt
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Nov 2, 2007
3:53 am
25039
... TA I figure a hundred gallons of clear epoxy will preserve you for future generations pretty well. There are also the LN2 folks, headsicles, in of all...
DH
revtkatt
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Nov 2, 2007
3:56 am
25040
... chart of the radioactives activity or spectrum at time of burial. Wot, to prove the maths work? Bury a virgin '700, so our descendants can see how we built...
DH
revtkatt
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Nov 2, 2007
3:59 am
25041
No Problem, Would be interesting if it was not uncovered in an allotted time period. Only downside would be if future generations are more radiophobic than...
Chris Cavanaugh
night427
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Nov 2, 2007
11:51 am
25043
Geo; While the performance between new tubes may have been uniform in the early 60's, I might bring up the test you did some time back on some 30 6993 tubes...
ron02ceta
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Nov 4, 2007
12:56 am
25044
Geo; While the performance between new tubes may have been uniform in the early 60's, I might bring up the test you did some time back on some 30 6993 tubes...
ron02ceta
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Nov 4, 2007
12:57 am
25045
Yes LND always calls back and I did get a call, from the owner I think. Can't remember the details now, might have it in my notes. Geo ... From: ron02ceta To:...
Geo>K0FF
K0FF
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Nov 4, 2007
1:07 am
25046
I have a working Landers, Frary & Clark CDV-715 that sports an ion chamber different in design than those, say, in a Victoreen 1A or 1B. This may be normal for...
csh
saturn1bguy
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Nov 5, 2007
6:24 pm
25047
Haven't read all of it yet, but I thought I would share: http://people.csail.mit.edu/rahimi/helmet/ Chris Cavanaugh cav427@... Yukon, OK...
Chris
night427
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Nov 5, 2007
7:43 pm
25048
Seems like more protection is needed at those government frequencies, Chris. Check out the video too. ..jb...
John Boyle
ticktronix
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Nov 5, 2007
8:00 pm
25049
Hi guys, Today during my lunch break I was thumbing through the current issue of "CQ" magazine. Coupla old guys nearby saw what I was reading and asked if I...
Miki Kanazawa
mikikanazawa
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Nov 5, 2007
9:06 pm
25050
Corey - can we get some picutres of this? Then someone would probably be able to tell you. Jim RabidWolf Hickinbotham (Uncle Rabid) Uncle Rabid...
Jim RabidWolf
rahantubbe
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Nov 5, 2007
9:40 pm
25051
If you have old CQ mags around, look at page 96 of March 2002. "K0FF DXCC". Geo>K0FF ... From: Miki Kanazawa To: CDV700CLUB@yahoogroups.com Sent: Monday,...
Geo>K0FF
K0FF
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Nov 5, 2007
9:48 pm
25052
Don't know about that story but my work takes me all over places like Bud. There are no rad emitters there. I have seen plenty of them in other places and know...
Bob Fleming
lucky_jerk
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Nov 6, 2007
1:18 am
25053
... I don't have any pictures, but do have a drawing of the situation that may help: http://www.cs.utah.edu/~hatch/images/ionchamber thanks, Corey...
csh
saturn1bguy
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Nov 6, 2007
10:08 am
25056
HPS.org has a nice pdf relating to medical exposure. Here is a link: http://hps.org/documents/meddiagimaging.pdf Although this document does not directly...
Jim Darrough
KI7AY
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Nov 6, 2007
7:15 pm
Messages 25021 - 25056 of 31435   Oldest  |  < Older  |  Newer >  |  Newest
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