ANOTHER INFORMATIVE VIDEO

Another amazing and informative video from VK3FS.

What is the T-Index, and how does it affect HF radio propagation?

In this video, we explain one of the lesser-known but valuable indicators of HF propagation conditions for amateur radio (Ham Radio) operators.

Discover how the T-Index relates to sunspot numbers, solar activity, the ionosphere and the Maximum Usable Frequency (MUF), and why it can provide a more realistic picture of HF band conditions than sunspot numbers alone. We'll explore how ionosondes measure the ionosphere, what foF2 means, and how Australia's Bureau of Meteorology Space Weather Services uses T-Index data in HF propagation prediction tools such as ASAPS.

Whether you're a beginner learning about HF communications or an experienced Ham Radio operator chasing DX, hunting or activating POTA (Parks on the Air) and WWFF (World Wide Flora and Fauna) stations, understanding the T-Index can help you interpret propagation forecasts, choose the best HF frequencies and improve your chances of making long-distance contacts on bands such as 10m, 15m, 20m and 40m.

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