Radiation Detection

Brian Your probe is showing very low background for a probe its size, even at higher than usually necessary voltage (only up to about 3000 cpm). That unfortunately means that it is probably too bad to be of much use. I'm sorry to say that a probe like that is considered next to impossible for an ama...

Brian - If PRA sees the GS-PRO as a sound card, then Therimino will as well. Make sure you are not unplugging the GS- PRO between program sessions, as that will cause a problem with Windows applications recognizing the device. You should plug the GS-PRO in at the beginning of your Windows session an...

Nice work Ben. I'm glad to see that the Hamamatsu R6233 is working well with the 63X63 crystal. Nice build. Tom

That wire looks homemade, but easy enough to make and should do the job. Ludlum's own solution is seen on the first Ludlum on the right (model 9 I think). Built directly into the clasps that hold the can onto the instrument. The clasps are usually riveted to the can, but the cans will interchange be...

Good to see you here Brian. Enjoy the journey, it's more than half the fun.

Many thanks Will.

Will - The BT connection issue has been discussed previously in this thread. Seems to be very spotty and prone to drop connection even after established. Make sure the PDS batteries are fully charged and that the PDS is very close to your laptop when making the connection, as this "may" help. I also...

Hi Ben, Glad to see you here and look forward to your contributions. It would be great to see a DIY kit based on a device like the ESP32 (Bluetooth or WiFi) and easily integrated with a detector, something that can wirelessly send signals directly to a mobile device in real time with enough resoluti...

Yes I meant to say 75k. Mine are all 75 kOhm base value between dynodes. Perhaps that is why yours say's "MODIFIED" that yours is double the value of mine. I figured to modify these myself to work with more common hobby bias supplies someday when I get a chance... As far as output on the GS-PRO, per...

I have quite a few of them, and I think they are all 75 kOhm between dynodes. I'm sure they custom made them often to customer spec. A Canberra 3106D is the perfect HV supply to drive them. To bad they are too low for the GS, even at 150k.

Notice the Purple, Green, Orange, Gold 4-color resistors...