Do satellite phones offer advantages over VHF for emergencies?

Advantages of Satellite Phones Over VHF

Satellite phones use a network of satellites orbiting the Earth to connect calls, allowing for communication over long distances, including beyond the horizon. This is particularly useful in emergency situations where VHF signals can be blocked by terrain or obstacles. With a satellite phone, you can reach emergency services even when your location is inaccessible by VHF.

Satellite Phone Coverage Areas

Satellite phones can reach areas where VHF signals are weak or non-existent, such as at high altitudes, in dense forests, or in areas with frequent fog or heavy precipitation. They can also reach vessels or people in the middle of the ocean or at sea. For example, Inmarsat’s global coverage allows calls to be made to the coast guard or other emergency services from anywhere on the planet with a clear view of the sky.

Specific Numbers and Techniques

One key factor to consider when choosing a satellite phone is the satellite’s frequency, which should be above 3 GHz to minimize interference from weather and other sources. Another important consideration is the phone’s antenna size, which should be at least 30 cm to ensure reliable coverage. Additionally, it is essential to understand how to use the phone’s power-saving features, such as turning off the phone when not in use, to conserve battery life.