That's interesting. I suppose if you combined that with the proximity feature in RepeaterBook, you could get exactly what @WRXR374 is looking for. You could give it a radius from your location and it would show all repeaters that (theoretically) cover your location.
I use an 8watt HT sometimes (UV-5R8W) but never notice it getting hot on full power. It does run the battery down faster but I don't have any quantitative data for you.
@BradleyRN Paying for a premium membership on my GMRS.com doesn't automatically send a request to a specific repeater owner for tones to the repeater. You need to make a specific request to the repeater owner.
Irregular propagation makes this difficult. RepeaterBook has a "proximity" search but that isn't going to tell you any more than the map on myGMRS.com. There is a group researching making detailed propogation maps available but I don't remember who it was or what their progress is.
@WRYS709 Sorry, no I don't have one (yet). I've been thinking about getting one for my wife's car, just haven't pulled the trigger yet. Too many other things have come up lately.
It does seem like this radio would be supported since it is so popular. I guess people like it so much they aren't willing to give one up for development purposes.
What @Socalgmrs said is true most of the time. I have a fring case where I can not activate a particular repeater from my house on medium power but I can with high power. It is a UV-5R8W and there are a lot of trees and houses I have to deal with. In this case the extra power does make a difference.
The letters issue kind of reminds me of the way the letters in the Ionosphere regions came to be. Maybe the lines just evolved over time in a similar fashion.