True, well I'm in the EU so 868MHz in my case. Still, it is very susceptible to external conditions. It truly is a hit or miss. Personally I host a things network gateway(indoors), I live on the last floor of a building at one of the highest points in the city and it is still very inconsistent when I've been fiddling with it. Back when I was doing my tests a few months ago I took a micro controller with a LoRa module up on the roof so those truly were ideal conditions. I have yet to test the CC2500.