****** GLP RADIATION REPORTING CENTER ******

Phoenix, Arizona - Last Reading 4/2/11 1530 hrs 16 CPM (Previously 15 CPM)

wind = W 10 Mi/h *
temp = 93°F
avg = 15.7 CPM
std = 1.7 CPM

* I think my earlier hypothesis regarding wind direction affecting the readings is pretty much down the tubes.

and Thanks guys!

West Yellowstone station upgrade:

I've deployed a spectrum analyzer at the West Yellowstone site to perform detection and filter-based spectral analysis for radioisotopes from Radon and Thoron decay (natural uranium progenies). This will allow us to more accurately determine any influence on our survey data from the Ludlum and Thermo-Scientific instruments currently used there.

Thank you to station operator "Emerald Eye" for piquing my interest in this additional study.

For instrument information and method see the added station information for West Yellowstone in the first post of this thread.

I will be updating the top post with daily measurements from this instrument.

Driggs, Idaho station upgrade:

Not a big deal, but we set up audio output on the monitor at Driggs, so now you can hear the counts when viewing the live feed on Ustream.

FWIW, in my spare time I'm farting around with creating a little Geiger-counter program that can listen to your favorite counter by a direct audio connection and then perform the usual functions of a Geiger counter – display rates at high-medium-low response damping, averages over several different time periods, display in CPM and in µSv/h via a user-supplied conversion factor.

I'm just in the early design phase, deciding how to arrange controls and displays; working out algorithms; and arguing with Netbeans about everything.

This in Java, so is cross-platform; Windows, Mac, Linux.

I post this asking for suggestions for high-priority features beyond those mentioned.
* Log file will be rev 2. Need to decide what to log first.
* Is actual audio recording desirable? Another version 2 feature. As far as I can guess, maybe for later analysis of timing between pulses and so possibly some preliminary identification of likely radio-isotopes. But that can be accomplished other ways.

Last Edited by Nuke Skywalker on 04/02/2011 10:42 PM

Phoenix, Arizona - Last Reading 4/2/11 1530 hrs 17 CPM (Previously 16 CPM)

wind = WSW 10 Mi/h
temp = 84°F
avg = 15.8 CPM
std = 1.7 CPM

Java! B-E-A-utiful. I'll give this some thought and feedback.

I think audio recording probably won't be necessary since it's only used to drive the audio pipeline, but an option to pass-thru the audio would be good for those directly jacked in compared to those using a mic for indirect audio pickup.

Also, perhaps eventually a way to create, save and load profiles for different detection instruments (or their parameters rather) would be handy.

Will the project be copyleft?

Thanks!

Phoenix, Arizona - Last Reading 4/3/11 0700 hrs 15 CPM (Previously 17 CPM)

wind = calm
temp = 72°F
avg = 15.8 CPM
std = 1.7 CPM

I am also working on some software to record and count clicks from my meter. Right now I've got a cron job on my Linux server logging raw audio every 15 minutes, but I have to count the clicks manually or estimate based on the analog meter. I am also thinking about a direct electrical coupling to the audio input, because the acoustic coupling picks up some background noise.

Basically, I am going to create a C program that will open WAV files, perform a high-pass filter, and then level/duration detect to identify each individual click. Since I've already got a couple weeks of audio, I'll go back and process the older data for the record. Once I get it all working, I'll post it to the web.

Currently, readings here in the north metro Atlanta area are holding steady at about 17 clicks per minute.

Location: near Cheyenne, Wyoming
Elevation: 6200 feet
Instruments: Ecotest MKS-05 Terra-P dosimeter radiometer

Method: Open Air, Swipe / 3 minutes

1. Date/Time: 04/02/11 @ 17:00 hrs MST
CPM= 14 (.14 uSv/h)

2. Date/Time: 04/03/11 @ 9:00 hrs MST
CPM= 16 (.16 uSv/h) (light snow)


1. Cheyenne, WY-14 CPM 04/02/11 17:00 hrs MST

2. Cheyenne, WY-16 CPM 04/03/11 9:00 hrs MST (light snow)

Thanks. I'll add you again.

Sedona, Arizona last reading 4/3/11 1107 hrs 27 CPM

The Radalert 100 software may be adaptable for such a purpose. Specs on that software here: [link to www.geigercounters.com]

The addiation of :West Yellowstone, Montana - Last Reading 4/3/11 0600 hrs 3.1 pCi/L*** (Previously 1.9 pCi/L)

is very interesting and a nice addition.

Phoenix, Arizona - Last Reading 4/3/11 17:15 hrs 15 CPM (Previously 15 CPM)

wind = W 15 Mi/h
temp = 84°F
avg = 15.7 CPM
std = 1.7 CPM

Phoenix, Arizona - Last Reading 4/3/11 2230 hrs 17 CPM (Previously 15 CPM)

wind = W 8 Mi/h
temp = 75°F
avg = 15.8 CPM
std = 1.7 CPM

Anybody have the Twin Cities in Minnesota?

too bad people arent putting DMS coordinates to these readings. It could be mapped, if they were. I got the software to project points and software to display them with my extensive archive of thematic maps...

Oh! and southern Mexico,, zip and continuing at zip....

Dump the data set(s) to a flat file, preferably XML which will allow me to port those values ala carte into an overlay for the webcam(s). If you want to keep it light, maybe just the Standard Mean of CPM.

Will it play nicely with IcedTea-web?

Man I don't know how I missed your post, sorry! Anyways, cool! Sounds like you're on your way. I'm tempted to blow the dust off eclipse and pull down beta's from SVN if you guys need help testing.

How about an audible alarm if a certain CPM is reached

Phoenix, Arizona - Last Reading 4/4/11 0815 hrs 18 CPM (Previously 17 CPM)

wind = WSW 4 Mi/h
temp = 66°F
avg = 15.8 CPM
std = 1.7 CPM

Sedona, Arizona last reading 4/4/11 1235 hrs 23 CPM

Phoenix, Arizona - Last Reading 4/4/11 15:30 hrs 16 CPM (Previously 18 CPM)

wind = calm
temp = 81°F
avg = 15.8 CPM
std = 1.7 CPM

Phoenix, Arizona - Last Reading 4/4/11 2130 hrs 15 CPM (Previously 16 CPM)

wind = WNW 6 Mi/h
temp = 75°F
avg = 15.8 CPM
std = 1.7 CPM

Thanks again!

Phoenix, Arizona - Last Reading 4/5/11 0800 hrs 15 CPM (Previously 15 CPM)

wind = ESE 6 Mi/h
temp = 64°F
avg = 15.8 CPM
std = 1.7 CPM

Sedona, Arizona last reading 4/5/11 1315 hrs 23 CPM

Fort Collins, Colorado, USA (5020 feet)
April 5, 2:20 PM MST
0.17 uSv/hr outside 100% (0.17 is normal)
EcoTest MKC-05

I am keeping the faith but I have not been reporting much since there is zero to report here. I have the alarm at 0.25 uSv/hr, but nothing... When it goes off, I will let you know ;)

I guess no news is good news :D