Your antenna is the single most important factor affecting VHF radio range, and three key parameters determine antenna performance: gain, height and length. The higher the gain (decibel rating), the greater the strength and distance of the radio signal.
Read moreHow do I increase VHF range?
How can I expand the range?
Read moreHow far can a 5w UHF radio transmit?
So according to our rule-of-thumb, 2 people around 6 feet tall using a 5 watt handheld two-way radio, used on flat ground with no obstacles, will have a maximum range of approximately 6 miles .
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