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"AN PRS 7 does not function well in low moisture content soils"
Understandable considering the UHF frequencies. Also, will not go very deep (mines are shallow anyway), And I bet if you wanted to work on one, you'd find that the electronics are potted. There were some variations of this design.
Overtheedge pointed at two very important things about this detector - 1) That it would detect voids (but not deep ones) 2) It was not very ergonomic (It's hard to say much in the army was back then). So technically it would not "detect" plastic, but the space that it was in!
It was considered unreliable (not being able to handle dry soil). And the army had to move on to other designs. They changed the design again to deal with plastic mines (at a higher percentage rate).
But I bet the guys that used these were pros, since their life depended on it!
"AN PRS 7 does not function well in low moisture content soils"
Understandable considering the UHF frequencies. Also, will not go very deep (mines are shallow anyway), And I bet if you wanted to work on one, you'd find that the electronics are potted. There were some variations of this design.
Overtheedge pointed at two very important things about this detector - 1) That it would detect voids (but not deep ones) 2) It was not very ergonomic (It's hard to say much in the army was back then). So technically it would not "detect" plastic, but the space that it was in!
It was considered unreliable (not being able to handle dry soil). And the army had to move on to other designs. They changed the design again to deal with plastic mines (at a higher percentage rate).
But I bet the guys that used these were pros, since their life depended on it!
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