↑ Types of radio wave propagation

This page is part of the project "Understanding HF Propagation"
by Doron Tal, 4X4XM

Radio wave propagation can occur through several mechanisms, each influencing how signals travel from the transmitter to the receiver.

Line-of-Sight Propagation: As the name suggests, this type requires a clear, unobstructed path between the transmitter and receiver. It's typical for radio waves above 70 MHz.

Ground Wave Propagation: This type occurs along the Earth's surface and is effective for medium and longwave frequencies (up to about 3 MHz). It's used for AM broadcasting and maritime communication.

Tropospheric Propagation: This type relies on the troposphere, the lowest layer of Earth's atmosphere, where signals can be bent or refracted. It can cause VHF and UHF signals to travel beyond the horizon, enhancing communication ranges under certain weather conditions.

Skywave Propagation: Here, radio waves are reflected back to Earth by the ionosphere, allowing long-distance communication. This is common in shortwave bands (3 to 30 MHz), where signals can travel around the globe. Ham radio operators and international broadcasters often utilize this method. The project "Understanding HF Propagation" provides a detailed overview and tutorials on HF propagation.

Satellite Communication: Signals are sent to and from satellites orbiting the Earth. This type is essential for global communications, GPS, and broadcasting services.

Understanding these propagation types helps in selecting the appropriate frequencies and techniques for reliable communication.


Visitors' flags since 17-August-2022
flags of visitors!

HF propagation explained

HF propagation overview

HF Radio Propagation Search Terms

HF skywave propagation tutorial for radio amateurs

Types of radio wave propagation

Skywave propagation for radio amateurs

What are the modes of HF radio propagation

What are the modes of radio propagation