Search found 10 matches

by ColoRad-o
24 Feb 2020, 10:52
Forum: Software
Topic: New port of BeqMoni availible
Replies: 6
Views: 2147

Re: New port of BeqMoni availible

Link? I rooted around to no avail, briefly.
by ColoRad-o
15 Dec 2019, 07:51
Forum: Software
Topic: Theremino MCA or Beqmoni ?
Replies: 13
Views: 6440

Re: Theremino MCA or Beqmoni (and some questions)

Hello everyone! I am now fairly familiar with PRA and I love the fact that it can save the “state” of a measurement. This permits one to go back with different or better calibration points and translate from “au” into keV. As suggested by Marek Dolleiser, it is useful to decompose the impact of rang...
by ColoRad-o
26 Oct 2019, 14:53
Forum: General discussion
Topic: Geiger Müller tubes on flights
Replies: 11
Views: 5093

Re: Geiger Müller tubes on flights

Tom, thank you very much for the references and the links (especially to your eBay store, which I seem to have overlooked). Before I took a GM on a flight I remember looking up the issue of altitude, but hadn't seen anything that disturbed me. Now I *am* disturbed, and will be more cautious. But I'm...
by ColoRad-o
26 Oct 2019, 02:59
Forum: General discussion
Topic: Geiger Müller tubes on flights
Replies: 11
Views: 5093

Re: Geiger Müller tubes on flights

Re: "ear barometer"--Could I feel a reduction in air pressure in an airplane cabin? Not to any significant extent, if I remember rightly. According to the WHO, "Although aircraft cabins are pressurized, cabin air pressure at cruising altitude is lower than air pressure at sea level. At typical cruis...
by ColoRad-o
25 Oct 2019, 05:55
Forum: General discussion
Topic: Minimal set of suggested sources for calibration
Replies: 4
Views: 2252

Re: Minimal set of suggested sources for calibration

Thank you all for the remarks and suggestions! I too have a gas lantern mantle (I bought it new in the 80s as a spare for a Coleman lantern!). I'll bear in mind that it's a cleaner source than I would have guessed. Lost my Apatite :)
by ColoRad-o
23 Oct 2019, 14:08
Forum: Introductions >> Start Here !
Topic: Howdy from Colorado, USA
Replies: 3
Views: 1888

Re: Howdy from Colorado, USA

Steven, Sorry to have overlooked your question! I don't know Nick, but yes, it's the same group. I note that the current version of the Geiger Bot iOS app expects (it appears) the old Apple audio 3.5mm plug, not the current Lightning connector. This suggests the app is not being actively maintained ...
by ColoRad-o
22 Oct 2019, 06:54
Forum: General discussion
Topic: Minimal set of suggested sources for calibration
Replies: 4
Views: 2252

Minimal set of suggested sources for calibration

Hello from the southern boundary of Rocky Flats, Colorado (yes, *that* Rocky Flats). Check sources appear quite expensive (I think I've seen them as low as USD 82 each, for disks), so money IS an object. What is a minimal set that would be generally useful for gamma spectrometry? Can I get by with j...
by ColoRad-o
18 Oct 2019, 09:04
Forum: General discussion
Topic: Can software facilitate identifying half-life?
Replies: 1
Views: 1736

Can software facilitate identifying half-life?

I have wrestled with trying to *search* these forums on "half-life" several ways, so am giving up. I will shortly be trying to identify a nuclide with a half-life of around 46 minutes; I suspect 213Bi. It seems to me (saith someone whose gamma spectrometer is on order, who hath never used one OR the...
by ColoRad-o
18 Oct 2019, 08:48
Forum: Introductions >> Start Here !
Topic: Howdy from Colorado, USA
Replies: 3
Views: 1888

Howdy from Colorado, USA

Howdy is Western talk, FYI. After building and using a SAFECAST bGeigie Nano (available as a kit) on road trips and hikes on a US wildlife refuge on a now lightly-contaminated (Pu, 241Am) former US weapons site, I've concluded it would be interesting and potentially useful to count isotopes with a g...
by ColoRad-o
18 Oct 2019, 08:40
Forum: General discussion
Topic: Geiger Müller tubes on flights
Replies: 11
Views: 5093

Re: Geiger Müller tubes on flights

I have taken a data-logging GM counter (a Mazur PRM 9000 with an LND 7317 pancake GM tube) on a flight of a few hundred miles. It operated fine and the radiation rate (as is well known) depends so sensitively on altitude (at least for ordinary flights) that it could be used as a crude altimeter. I f...