The BNS-98L is a highly sensitive gamma radiation meter coupled with an extensively usable data logger. Measuring range of gamma radiation is seven orders from natural background. The applied special algorithm generates alarm in case of quick or slow significant increase of radiation level besides the two adjustable and fixed alarm thresholds. The device is designed to operate under extreme meteorological and mechanical conditions and suitable to be used for reconnaissance on vehicles and UAVs or planted for continuous automatic data collecting. Optional GPS and meteo sensors. Memory card is removeable from outside the device and can be connected to the evaluating computer by a data reader with USB port.