Understanding HF Propagation

This video is an introduction to the fundamental concepts of HF propagation, with special emphasis placed on skywave propagation and the role of the ionosphere.


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[BryanWicks]

This presentation should be incorporated into the initial training of anyone wishing to get their ham license. I found the information to be concise, articulated well, sufficiently illustrated, and no needless fluff. Anyone actively interested in the topic will be well served with this introduction into the concepts discussed. Thank you for uploading this video; I only wished that I had seen it much sooner!

[solarmfolijezastakla]

No matter which ham radio class you are and how much experience you have this video should be listened many times.

[TheTechPrepper]

What a wonderfully executed overview of HF propagation. I wish I had seen this video while studying for my General license. Clear, concise and pure gold.

[outwithradios]

after 44 years of HF ops it still makes me feel like a child when i get long DX, what a great feeling

[DoronTirkel]

Anyone who is seriously interested in the subject will benefit from this introduction to the concepts covered. The information is articulated and illustrated clearly.
Doron, 4X4XM

[gbisaga]

I agree with the other folks, if you are studying for a FCC ham exam, especially the General or Extra exam, you should watch this video. Good concise description that will supplement your other learning.

[redsky]

Excellent presentation. Clear and to the point. The details of HF propagation can get quite complicated but this introduction is spot on.

[elmoreglidingclub]

This is an absolutely excellent explanation and presentation. THANK YOU!

[chrismeagher]

Excellent presentation with simple, effective graphics. Thanks

[victorb]

Very nicely described.refrashed my knowledge of hf prepogation

[rfmonkey]

"HF the only way to fly" regards from vk3 and remember "when triodes are glowing electrons are flowing"

[garylanders]

Great presentation!
Thank you kindly

[lpark]

Wow. Great presentation. It covers a lot of ground. I’m gonna have to listen to it again. Thank you!

[m_rehanbutt]

I luckily trained from R&S Germany

[konnorkuznetsov]

Excellent presentation! This is perfect for my new ham friends, thank you!

[EsmeContreras-xs]

Wow, it's really good. It's very attractive and the AD is very interesting

[jamespruitt]

Does the day vs. night rule apply to the time of day for the location of the receive / transmit antennas or the location of the person you're trying to communicate with? Meaning if my antenna is in Hawaii and it's morning, but I'm trying to communicate with someone in Guam, would I use a frequency based on the time in Guam or the time in Hawaii?

[RogerBravo]

Really good presentation 👏🏼 so kind of R&S to set up this videos of how radio and some antennas works. Sended this video to some friends that are interested in radio 💪🏼
Best 73/ Roger

[GFUW]

One of my students pointed out that the statement at 10:43 says that when the RF passes through the ionosphere and into space, that is the critical frequency. However, all the textbooks I have say the critical frequency is the highest frequency that is reflected (refracted) back to ground. Is there another definition in use?

[drankurbaruah]

How was sun spot info collected 400 years ago?


Thanks for the awesome video. Learnt a lot.
🙏