An interesting video showing how well these little radios perform in open space.
I remember doing this exact same thing 20 years ago at the birth of PMR446 here in the UK, unfortunately that was before YouTube so no footage exists, but I do remember being amazed at the distances achievable on just 500mw, my best contact being over 500Km!
My first PMR446 radios were Goodman's Trackers which cost me £100 for a pair. Prices have of course plummeted with great little radios such as the Floureon FC200's which are only £13 per pair.
Enjoy the video and get out there with your PMR446 radios, see just how far you can get!