Rig installs, trail channel plans and convoy comms.
In one line
Most trail groups run GMRS mobiles on one main channel, with FRS-compatible channels for passengers and spotters on handhelds.
No radio or antenna has been tested yet. These slots fill in when real measurements exist.
miles
Same two points each time: a forest trail, a canyon, and a suburban grid. We check whether a message gets through, then read back five standard phrases at each marker.
“Up to 35 miles” on the box assumes mountaintop to mountaintop. You need a number for your terrain.
Read the protocoldB(A) @ 1 m
A-weighted level at 1 m from a standard tone at full volume, plus clarity notes taken in a moving vehicle.
In a rig on washboard road, loud and clear beats every other spec.
Read the protocolGuides for this section are in research. [TO FILL]