Do the forerunner type GPS units work OK under tree cover? I suspect that they may miss a few points. Memory map gives 21.5 but it can be short in upland areas by a few percent. I reckon 22 to 22.5 is about right.
Do the forerunner type GPS units work OK under tree cover? I suspect that they may miss a few points. Memory map gives 21.5 but it can be short in upland areas by a few percent. I reckon 22 to 22.5 is about right.
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