I only stopped and walked away about 20-30 ft from radio 1 to test at 1 mile distance. No other traffic on this repeater and I have been monitoring for a few weeks. I do have A771 antenna attached. there are a lot of hills in my area. I was able to get transmission withing 4-5 miles, but I could not hear radio to radio voice transmission, but this was with both radios in my truck. This is probably the flattest area to the repeater, but once I get closer to home there are a few hills and vegetation.
I will order the midland and see if it helps. If not I guess the next step up is home base antenna. Not giving up yet.