Just thought I'd toss this out there.
I recently went to take a field strength reading at my 7100 foot test spot (a parking lot off the side of the highway).
I had also brought along some radios to test actual reception.
I can report my station was loud and clear on a GE Super Radio (same as the Radio Shack or RCA Super Radio), also loud and clear on the radio in my SUV, a 2010 Ford Escape. As well as loud and clear on a Grundig S350DL radio (a pretty decent communications receiver) and also clear as day on a really cheap 1970's vintage Panasonic little transistor radio (you know, the ones with the 9V battery that you used to listen to the baseball game or Steppenwolf songs on top 40 radio back when you were a teenager). But then I fired up the little Tecsun PL-310 specifically because I was asked to get a dBu reading at this spot, and it picked up so much static and noise that my station was unlistenable!
Demonstrating the HUGE differences in "range testing" with different radios. Also makes me wonder what is so different about the Tecsun that I would have easily considered myself out of range if I were relying on it exclusively!
TIB