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New from vk3fs

Updated: Feb 11

And now for something different - Sporadic E propagation in 2 minutes (ish).

If the comments are encouraging, there'll be more 2 minute-ish videos! Feel free to suggest topics.

Sporadic E propagation is a type of radio wave propagation that occurs in the E layer of the ionosphere.

The E layer extends from about 90-120km above the earth’s surface.

Here's how it works More at

| Intro 00:08

| What and where is the E layer? 00:40

| 1475km Es 2m contact with VK4OX 01:05

| How E clouds are formed and work

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