Sporadic E Propagation

Sporadic E propagation is a result of highly ionized patches or “clouds” that occasionally form in the E region of the ionosphere at altitudes between approximately 80 and 150 kilometres.

Communication distances of 800–2000 km can occur using a single Es cloud. This variability in distance depends on a number of factors, including cloud height and density. MUF also varies widely, but most commonly falls in the 25 – 150 MHz range which includes the amateur radio 2-meter, 6-meter, and even the 10-meter bands. Strong events have allowed propagation at frequencies as high as 250 MHz.

0:00 | Introduction
1:13 | Atmospheric Layers
1:42 | The Ionosphere
2:48 | The Troposphere
3:35 | The D Region
4:12 | The E Region
5:16 | The F Region
6:19 | Sporadic E Propagation
9:12 | Signal Refraction and MUF
13:00 | Sporadic E effects on HF and longevity
More at https://3fs.net.au/sporadic-e-propagation/

Видео Sporadic E Propagation канала VK3FS