Detecting K-40 in bananas with Radiocode RC103

It has never been an issue for me (stopping the accumulation after so long.) I'm curious to know what advantage a, say, 7 day (168 hours) accumulation has over a 175 hour accumulation. I have always thought that a longer accumulation would always be better than a shorter one. For instance, Last night I was re-sampling some Sr-90. It's fairly active, so I wanted around 3 hours, or more. I forgot about it, went to bed and woke up to a 12 hour accumulation, which is much better than the 3 hour I had intended. Don't get me wrong though, I'm not saying what you are trying to do is wrong or anything. I just struggle to see the issue.

After looking a little more it seems there is absolutely no way to automate this within the Radiacode apps (PC/Android - I assume the same with iOS.) However I did find some tools that may assist you, and looks to have some conversion tool for converting the spectra into ANSI N42 spec for use in InterSpec:  https://github.com/ckuethe/radiacode-tools  and also this here may help, or may not:  https://github.com/cdump/radiacode  Another method may be using something like AutoHotkey to save the XML after a certain length of time. I have looked a little at this, and I think it could only be exported as the XML as this generates a filename based on the current time/date, but saving to the library within the software seems to default to the last spectrum save name, so would most likely overwrite the perviously stored spectrum, or just stop at the 'do you want to overwrite...' dialog.

As the Radiacode accumulates the spectrum on the device itself, it would require the Radiacode to be connected to the software constantly in order to facilitate saving of the spectrum. This isn't something I generally do and just tuck the Radiacode and source away in a corner of my office and let it get on with it. I'll connect with the Andriod app (over bluetooth) to check the spectrum occasionally, then when complete, I'll plug the Radiacode into my PC, save the spectrum and reset it as necessary.

That's fair enough. I'm literally just testing samples to see what they are, and if they are what I suspect they are. I have a handful of sources that came with vague descriptions, such as '10g dried and screened natural soil from a lawn between the villages Gauern and Wolfersdorf in the uranium mining area Ronneburg.' and 'Thoriated cotton - This was supposedly found in a jar similar to a mason jar in some old mine, I think in the UK.' So is really just testing to see what kind of emitter they are.

The spectrum can on reset on the device itself, or are you looking for an automated option?
 

To reset the spectrum on the device, go to the spectrum mode, so it is showing the spectrum and hold the down button for a couple of seconds, then use the single big button to select 'yes' then hold the big button. That should restart the accumulation. I think you can assign the buttons using the Radiacode PC or phone software, so may be different. You can certainly do it through the menus.

I agree, that price is crazy. I'd be interested in hearing any reply you get from them. I'd be surprised if you did though.