All Forums  GQ Electronics Forums  2.GQ Geiger Muller Counter  High GMC 300E readings = failure mode?

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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by GoldOriented[/i] [br]Since 22 Nov 2013 have been seeing a few fairly large spike clusters (4000CPM+) each day here in San Diego. The rate/number of spikes has been steadily increasing as well as the duration and magnitude until this morning (since 3am Monday 3 Dec 2013)I am seeing a cluster of spikes of 4000CPM++ lasting for over two hours. Is there any known GMC 300E failure mechanism that would allow entirely normal readings most of the time with these spike clusters each typically lasting only 2 -5 minutes or so. They gradually subside quickly to normal readings but begin rather abruptly. So far this is a very small rad dose if it is real. Have at least 200 hour so before any concern for health at all. Could you email (or also email) any answer/help? frankvaught@sbcglobal.net Thanks. [/quote]    Insert an Image File Check here to include your profile signature.