Two detectors in coincidence mode, one on top of other.
Radioactive rock test sources from ebay – large and small ones – plus I have some pieces of lead which previously used in trials under the detectors.
Results of tests 2-3/5/2026:
Two detectors in coincidence mode, one on top of other.
Radioactive rock test sources from ebay – large and small ones – plus I have some pieces of lead which previously used in trials under the detectors.
Results of tests 2-3/5/2026:
