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!

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

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.

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

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

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

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

Great presentation! Thank you kindly

I luckily trained from R&S Germany

Good Presentation

Excellent presentation with simple, effective graphics. Thanks

Excellent presentation

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

Amazing presentation, thank you!

Well done.

Very nicely described.refrashed my knowledge of hf prepogation

It is informative indeed... Thanks...

Good English presentation...

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

Great explanation 🥳

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

Great video

Excellent

excellent

How was sun spot info collected 400 years ago? Thanks for the awesome video. Learnt a lot. 🙏

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?

In maximum condition, how must the most longer distance range for communication in HF frequency?

How do you prevent HF signals.

Thanks for a great presentation! Will pass along to other ham operators. N5CSU

Giggity giggity Recon

Anda boleh memilih untuk salah satu daripada hadiah di atas

question about slide 23. you stated if the MUF becomes higher than the LUF @17:38. did you mean if the LUF becomes higher than the MUF??

the picture depicts lines of electromagnetic force but they tend to make our mins believe the signals are shot out like bullets,but its really a giant omni directionals disruption of molecules from the antenna envoping in an omni directional patteren like a bomb going off,the molecule stays put but transfers the vibration to the nieghboring molecule like dominoes,f going deep into the ground and reflecting back upwards or refracting from the ground becuase of the different meduim opposedt to the atmosphere then reaching up into the inonsphere where it then refracts back to earth where it could end up anywhere there is a least resistant path to do so ,i think anyway ,every time we hit the key we ignite a giant vibration of the molecules like a pattern of an explosion ,with everything staying put

I wonder if there are any flat Earth radio people out there...

Send this to people who think the earth is flat. Prepare to be amazed by their ignorant defiance.