The hobby-grade R/C helicopters (from which I believe the receiver originated) typically are bundled with low power radios (under 10 Mw), but a higher power transmitter of 100 Mw or even more can easily be substituted. Range is often quoted at 2.7 miles for the 100 Mw (real, usable range in the clear), so a few city blocks are going to be no problem.
How does the signal get through the steel pressure cooker?
Why is all this arguing about types of radios important? It adds nothing to the analysis of who was involved. Thank you.
The international system of standard's tells us that "milliwatts" be abbreviated... "mW". Small "m" for milli (x .001), as opposed to "M" for mega (x 1,000,000).
The unit for the measure of electrical power, the Watt, is capitalized because it was named after the Scottish inventor/engineer, James Watt.
I apologize for being my usual picky self. No offense. Hillary might say, "What's the difference"? But the way I see it, you can't go wrong paying attention to detail.