Well, the tests I've conducted have been pretty rigid. The purpose of which was to find a setup that actually works at 1.2-1.4mi in the woods so our whole group can actually talk.
The tests have been same spots for each distance point as well as some "random" spots at known distances to simulate walking around. Conducted in three different areas all heavily forested with near zero open areas and only mild elevation differences. One of which was our real hunting area from our actual various spots (and right now is full foliage so I would think better in fall).
I've also tested MURS and CB. MURS falls off at 3/4mi no matter what but seems better, more stable on it's edge. CB absolutely sucks, and I had the 51" telescoping antenna on it. 1/2mi at most with CB. Yeah, I had high hopes for CB, but...it was not to be. So I honed in on a few GMRS radios and have been conducting tests. The Nagoya 771g antenna helps them all out ALOT, a good 1/4mi more. My point was at the same distance points with each radio in hand and my wife on the other end, with same radios (i have 2 of every type), so I ran same radio to same radio, same radio to different radio, etc..at the far edge about 1.4mi the KG935G at high power will make it, and at medium power (4.3w) will not make it. The other 4w radios will not make it the 1.4mi. By not make it I mean mabey you get some words and alot of static, but unusable for an actual conversation.