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St Charles IL went wacky this 12/23/2013 around 8:00am
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Author:  EB789320 [ Mon Dec 23, 2013 9:55 am ]
Post subject:  St Charles IL went wacky this 12/23/2013 around 8:00am

My geiger went unusually high this morning for a brief period of time - maybe 15/20 mins. Normal range here is measured in 20's, I come down to the basement where I have it next to a window and it was in a 1300's. I unplugged it, turned it off to see if it was equipment related and it spiked right back up. After another 10 mins or so it settled down. Not sure what that was all about.

Author:  KingCobra [ Mon Dec 23, 2013 11:44 am ]
Post subject:  Re: St Charles IL went wacky this 12/23/2013 around 8:00am

I looked at your graph: http://netc.com/chart/view.php?n=1%3AEB789320 - CHART MEMEBRS ONLY

What model geiger counter?
Are you using the Raspberry Pi?

Author:  EB789320 [ Mon Dec 23, 2013 2:23 pm ]
Post subject:  Re: St Charles IL went wacky this 12/23/2013 around 8:00am

I can't remember the model number, but it is connected to Rasberry PI. I had another alarm shortly ago, this time measured in the 2000+ CPM. Very strange. Generally hovers in the low to mid 20's. We did have a mass of cold air come through, maybe with low pressure cold air, radiation is falling out of atmosphere?

Author:  EB789320 [ Mon Dec 23, 2013 2:27 pm ]
Post subject:  Re: St Charles IL went wacky this 12/23/2013 around 8:00am

When I return home I will post model number. Also after this morning's unusual activity, I had someone at my house relocate the unit to different part of home near another window.

Author:  KingCobra [ Mon Dec 23, 2013 2:36 pm ]
Post subject:  Re: St Charles IL went wacky this 12/23/2013 around 8:00am

EB789320 wrote:
I can't remember the model number, but it is connected to Rasberry PI. I had another alarm shortly ago, this time measured in the 2000+ CPM. Very strange. Generally hovers in the low to mid 20's. We did have a mass of cold air come through, maybe with low pressure cold air, radiation is falling out of atmosphere?


I believe you are likely using the GMC-200 or GMC-300 style geiger counter, I own both. I own a fiestaware saucer which is the most radioactive thing I own. The radiation would have to really be high in your area for a unit like the GMC-200 or GMC-300 style units to be really reading radiation as high as you are talking about "2000+"

http://www.orau.org/ptp/collection/consumer%20products/fiesta.htm

Author:  EB789320 [ Mon Dec 23, 2013 4:18 pm ]
Post subject:  Re: St Charles IL went wacky this 12/23/2013 around 8:00am

GMC-300 and it peaked around 2900

Author:  hey [ Mon Dec 23, 2013 4:52 pm ]
Post subject:  Re: St Charles IL went wacky this 12/23/2013 around 8:00am

this is harlan, Is it a gmc-300E or gmc-320. the gmc-300 were older models, are you positive?

Author:  TampaBay1 [ Tue Dec 24, 2013 12:51 am ]
Post subject:  Re: St Charles IL went wacky this 12/23/2013 around 8:00am

HEY can't touch this......

Author:  EB789320 [ Tue Dec 24, 2013 8:47 am ]
Post subject:  Re: St Charles IL went wacky this 12/23/2013 around 8:00am

GMC-300E, I will post a pic here shortly

Author:  EB789320 [ Tue Dec 24, 2013 9:21 am ]
Post subject:  Re: St Charles IL went wacky this 12/23/2013 around 8:00am

http://idt-inc.com/images/gmc300e.jpg

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