What is the maximum range for a VHF radio?

The maximum range of a VHF radio depends on several factors, including the transmitter power, antenna gain, height above ground, and the operating environment. In general, VHF signals have a shorter wavelength and higher frequency than other radio bands, which means they are less likely to be obstructed by obstacles such as buildings and hills. VHF signals can typically propagate line-of-sight up to a maximum distance of around 200 miles (320 kilometers).

Factors that can affect the maximum range of VHF radio include:

- Transmitter power: The higher the transmitter power, the longer the signal will be able to reach.

- Antenna gain: Antennas with higher gain will transmit signals more effectively, increasing the maximum range.

- Height above ground: The higher the antenna is located above ground, the more distance it will be able to cover.

- Operating environment: The maximum range may also be affected by buildings, hills, trees, and other obstructions, as well as atmospheric conditions such as rain, snow, and fog.

In practice, the maximum range of a VHF radio is often limited by the local terrain and the ability to establish a clear line-of-sight between the transmitting and receiving antennas. To extend the range, repeaters or signal boosters may be used to relay signals over longer distances.