The physical transmission range of a VHF radio signal is primarily limited by:
- AThe curvature of the earth
- BThe wattage power output of the transmitter
- CIonospheric refraction layers
- DThe time of day and solar activity
Show the answer and why
VHF signals propagate as 'Space Waves' that travel in straight lines and do not bend. Therefore, the visual horizon created by the curvature of the earth acts as a hard physical limit to the reception range.