So this evening I thought I’d drive up South Mountain in Phoenix Arizona and have a look at the towers and see if the HotSpot would reach. Yes it does. Worked very well. A little over 3.5 miles as the crow flies and about 30 minutes of driving at 20 mph up the twisting and winding mountain road.
Here’s a Video… https://goo.gl/photos/KzM6XXwRKhoqKXwo7
And a photo…