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The Ionosphere Part 2

The ionosphere makes up less than 1% of the mass of Earth’s atmosphere above 100km. It’s the part of our atmosphere that affects the passage of radio waves. But how? Ionised Oxygen atoms are the key to radio propagation and good DX. EUV and activity from our sun affect the MUF and LUF. The inspiration for this video came from "Ionospheric Radio" by Kenneth Davies, an up-to-date survey of the theory and practice of radio wave propagation involving transmission through and reflection from the ionosphere. Kenneth Davies is a senior research scientist at the Space Environment Laboratory in Colorado. https://www.google.com.au/books/editi... Find out more about this video at https://bit.ly/4c9FZ21 View "The Ionosphere" part one at https://bit.ly/4eogH2s 00:18 | Where is the Ionosphere? 01:02 | What is Ionisation? 01:24 | 02 is a molecule made of 2 oxygen atoms covalently bonded together 02:13 | Oxygen atom behaviour when exposed to Extreme Ultraviolet radiation 03:17 | What do free electrons mean for amateur radio? 02:36 | Lifetime of free electrons 03:47 | Example of band conditions on 14MHz with Peter VK3YE portable 04:32 | Bands where the ionosphere has the most effect 04:55 | Characteristics of ionospheric propagation and example 05:20 | 10m propagation example and conclusion 05:39 | What type of radiation affects what region in the ionosphere 05:55 | The mathematical theory behind radio propagation 06:18 | The F2 layer 06:50 | The radio spectrum and 8 bands interact with the ionosphere 08:56 | QRP on 14 MHz with Peter VK3YE portable 09:26 | The 2 sources of ionising radiation - short and long term 10:11 | 3 atmospheric parameters 10:32 | MUF and LUF - The critical atmospheric parameters 11:04 | The usage frequency window for propagation 10:25 | Ionospheric Irregularities