Talk-about's
I've used Motorola Talkabout (250's?... an older series) very sucessfully.
- Over basically line of sight, with one person inside a car (thus limiting range), we punched out well over 2 miles. Close to 3 actually.
- In a forest with hills and escarpments, we got 1.5 miles in any direction, and if avoiding ridges (forest only) we got 2 miles.
We did these tests in an area that we've been hiking every single week, for almost 10 years. We know the terrain, and the distances perfectly as they have been mapped by GPS many times.
What I did find is a substantial variability radio-to-radio. The FRS radios use a self adjusting squelch. If the noise floor of the given frequency is high (read: a lot of other radio traffic on adjacent channels and privacy codes etc.), then the radio effectively gets desensitized to avoid garble.
But even in a quiet environment, we found times where one radio would receive clear as day, and another exact same radio would not even cracle. Pushing the "monitor button" which disables the squelch, brought clear-as-day voice in on the unit which would seem to not receive well. So it would appear that the variance in internal adjustments / settings of the unit's squelch function has a substantial effect on performance between radios of the same make and model.
the wall......