Why does one version of the rad-D come with lead shielding?
The lead shielding blocks out all natural and stray gamma radiation except in a 45 field of view from the front of the rad-D. This allows the rad-D to be focused on a small area, allowing specific packages, individuals, or vehicles to be inspected for gamma radiation without false alarms from nearby gamma sources. Is there any way to permanently set the sensitivity higher to adjust for constant high background levels, (around an X-Ray machine, etc). The rad-D contains a 10-position switch that adjusts the detection threshold. Basically, it increases the number of counts needed to generate an alarm. This switch allows the rad-D to operate in high radiation noise environments (like X-ray scanners) while maintaining a high sensitivity to detect gamma radiation sources. The switch is set initially at “0” (max sensitivity). Adjusting the switch higher raises the threshold used to calculate the alarms. The switch has a strong impact on the lower level alarms (“1” through “5”), but its impact
