Two radios may or may not communicate with each other if either radio is placed poorly or if obstructions have intruded the area. Optimum range conditions are achieved when both radios are at least 5 feet off the ground, antennas are pointing upward, there are zero obstructions, and the radios are facing each other.
The following are examples that may shorten range.
- Radio near body or in pocket
- Placement in or around buildings
- Sitting or squatting