Obviously it depends on what data the radio provides to user software - I have no idea if it does pass this sort of thing.

I was pretty much paraphrasing my understanding of an article I read a couple of years ago - I've had a quick look, but can't find it right now. I'm no radio comms expert but I do know that signal field strength and the snr are two different and independent things and that the snr can fluctuate but the field strength stays fairly constant with a static receiver and transmitter.

jjx was aking why he had a strong signal indicator (which only shows signal field strength) but very poor data throughput - a situation that can easily be explained by noise affecting transmission.