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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 19927 - 19957 of 31421   Oldest  |  < Older  |  Newer >  |  Newest
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19927
... Removed the glass face and tried again. Now i get 100 counts/sec, which also says 18uSv/h on the meter. Would the 18uSv/h calibration be for alphas, or...
Russell Shaw
rj2000_au
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Feb 1, 2006
8:53 am
19928
I found it interesting that President Bush included "clean, safe nuclear energy" in his State of the Union speech last evening. I applaud his courage for even...
Robert Carroll
ca1002
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Feb 1, 2006
1:53 pm
19929
... Apparently he was going to say more, but they haven't fleshed out all the details yet. ... We absolutely NEED more nuclear power. And in a lot less than...
Chris Smolinski
lastoneouttu...
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Feb 1, 2006
2:09 pm
19930
On Wed, 01 Feb 2006 08:50:57 -0500 "Robert Carroll" ... Bush is in the lame duck phase of his regime. He could have endorsed using live kittens as fuel for...
Phil Bigelow
phillip_bigelow
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Feb 1, 2006
2:30 pm
19931
Hiya guys, joe here again. i was thinking of runing a remote probe out to my garage ~50 feet from my room as far as cable length is concerned, so far i have...
Slave Kitten
slave_kitten121
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Feb 1, 2006
3:11 pm
19932
In general, not a good idea because the capacitance of the cable will distort the pulses so that they will no longer be detectable. Wave shaping compensation...
J. Marshall Reber
groschen1936
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Feb 1, 2006
3:53 pm
19933
What kind of reading should a CD V-700 get with it's check source (assuming fresh batteries are installed, and everything is working well)? Is a good reading...
Kevin
thebiggiantk...
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Feb 1, 2006
4:02 pm
19934
Could another type of cable be used, possibly sheilded CAT5?...
Kevin
thebiggiantk...
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Feb 1, 2006
4:13 pm
19935
Good quality coax cable might help. The ideal solution is to put the rad detector in the remote location, and then run a low level output signal from it, to...
Chris Smolinski
lastoneouttu...
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Feb 1, 2006
4:26 pm
19936
If I needed a remote sensor for a low cost, I would put the entire CDV-700 out at the site, remove the meter movement and remote it alone, put just the meter...
Geo
K0FF
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Feb 1, 2006
5:41 pm
19938
... I didn't know that, and hearing it surprises me 'cuz about 75% of what I've heard from mass media (yes, I know...) about ambient ionizing radiation has...
Chuck Counselman
w1his
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Feb 1, 2006
6:48 pm
19939
Opto-coupling may work well too. Most LEDs should be fast enough. You could use the headphone output instead of digging in to the metering circuit. An LED...
Phil Bigelow
phillip_bigelow
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Feb 1, 2006
7:07 pm
19940
On Wed, 1 Feb 2006 13:48:25 -0500 Chuck Counselman <ccc@...> ... The USGS web site has various environmental radiation maps of the U.S. for Uranium,...
Phil Bigelow
phillip_bigelow
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Feb 1, 2006
7:19 pm
19941
You have left out an important qualifying adjective, viz. "INTERNAL". In general, the largest contribution to the natural background radiation of the earth is...
J. Marshall Reber
groschen1936
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Feb 1, 2006
7:29 pm
19942
Quite correct Marshall, my comments are concerning detectable gamma radiation as would be registered on a Geiger Counter or Spectrum Analyzer. Typically a long...
Geo
K0FF
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Feb 1, 2006
8:14 pm
19943
Yea i was thinking capacitance would be a problem, i was trying to get it as cheap as possible. my second way was going to be building a line powered counter...
Slave Kitten
slave_kitten121
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Feb 1, 2006
11:05 pm
19944
http://www.unscear.org/pdffiles/annexb.pdf...
J. Marshall Reber
groschen1936
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Feb 1, 2006
11:22 pm
19945
Hello Chuck. You may find these 2 links interisting. http://www.nsc.org/issues/rad/ionize.htm http://www.physics.isu.edu/radinf/natural.htm Tracy Chuck...
Tracy Albert
thealbert1
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Feb 1, 2006
11:28 pm
19946
If you get the RS232 logging sotware up and running, I'd like a copy of the code. I'm just beginning to learn the ins and outs of the serial port, so I'm kinda...
Phil Bigelow
phillip_bigelow
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Feb 1, 2006
11:34 pm
19947
... From: "Chris Smolinski" <csmolinski@...> ... Chris, I completely agree. I just remember the problems experienced by Public Service New...
Robert Carroll
ca1002
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Feb 2, 2006
2:17 am
19948
... I fully support those who are opposed to, and do not wish to use nuclear energy. Their electricity can be shut off any time they like. -- ... Chris...
Chris Smolinski
lastoneouttu...
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Feb 2, 2006
2:22 am
19949
Could nuclear power make a comeback? I certainly hope so! This needs to be put on a war footing... It's such a shame to see what's happened with this country....
Tom Herman
n1bec
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Feb 2, 2006
4:19 am
19950
Hi: Now have two Geiger counters and a couple of test sources (depleated uranium and Cs137). http://www.pacificsites.com/~brooke/Rad_Det.shtml Then next step...
Brooke Clarke
brookeclarke...
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Feb 2, 2006
4:35 am
19951
What kind of reading should a CD V-700 get with it's check source Hi Kevin! You should see about a 50% deflection on the X-10 range, provided that you have a...
Tom Herman
n1bec
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Feb 2, 2006
4:41 am
19952
... provided In less CDVish terms, the source is 1-2 "mR/hr", beta window open (thus the quotes). (Its actually spec'd to be that.) This is similar to a...
DH
revtkatt
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Feb 2, 2006
4:58 am
19953
Data here may help get ou started: http://groups.yahoo.com/group/HomeRadLab/message/16 there are others too, Geo ... (depleated ... what...
Geo
K0FF
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Feb 2, 2006
5:41 am
19954
Either: 1) Your sources are strong enough to be detectable at a distance which is more than ten times the largest dimension of your detector. Then the field of...
J. Marshall Reber
groschen1936
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Feb 2, 2006
3:38 pm
19955
Don't forget to block the beta component from the Cs-137 or it will skew the reading when the probe's beta window is open. 3mm of aluminum sheet, 1/2" of...
Geo
K0FF
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Feb 2, 2006
6:51 pm
19956
i got a cdv-720 but its not in the right range. any one know were i can get a cdv-700 cheap and were i can get it (if it doesn't come calibrated) and the...
trevlite
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Feb 2, 2006
9:13 pm
19957
I have a choice between a Lionel or Victoreen (assuming both are model 6b, same condition and price). The only difference I'm aware of is the Victoreen used...
Kevin
thebiggiantk...
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Feb 2, 2006
9:28 pm
Messages 19927 - 19957 of 31421   Oldest  |  < Older  |  Newer >  |  Newest
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