They would probably operate on the NEXTEL assigned frequencies (800Mhz range, FRS is in the 400Mzh range), and I don't see them being very powerful. Maybe good for something like a construction site, but site-to-site communications for anything over a mile. To get anything over that, you're going to need a bigger battery.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.