On this week's podcast, Bob gives a brief and simple explanation about how GPS's work and then discusses how he uses one to record his hikes. He explains why he believes his GPS tracks are more accurate at recording distances than the tracks measured in Colorado's COTREX app. NASA webpage explaining GPS: https://go.nasa.gov/3J6cSzX National Geographic webpage about GPS: https://bit.ly/3cCZdE5 Please consider becoming a patron of this podcast! Visit: https://www.patreon.com/hikingbob for more information Hiking Bob website: https://www.HikingBob.com Wild Westendorf website: https://www.Wildwestendorf.com Where to listen, download and subscribe to this podcast: https://pod.link/outdoorswithhikingbob