Fellows,
I am happy to see how our modern radios have come along with good systems!!
I think I have given the most demanding and punishable range test a radio can endure..
I Had myJR DMSS receiver/servo system Inside a thick aluminum armor, put together with heavy duty rivets, steel fasteners, chomo-moly, tubing not to mention a running gas engine which I moved it with. The metal armor was near big steel buildings, a Fuel tank fenced farm, T hangars and parked vehicles, In the LOW POWER RANGE mode I was able to maintain SOLID control SEVERAL TIMES the specified ground distance numbers in the JR manual.
If a radio can endure this kind of testing, that is the radio I will use for my complex projects..