Originally Posted by
dedhed
But it was relevant to the OP's comment in post 55.
"Non military GPS systems are slightly crippled for security's sake. They're programmed not to function above a certain speed or altitude. I thought it was 10,000ft but there are mountains west of here taller than that where people hike so I dunno."
No problem. He conflated two issues and I addressed the one that was relevant.