Radio Propagation 101

This video gives you the basics of Radio Propagation:
Basic information that includes Sun Spots, Solar flux, K and A factors

Why should you be interested in propagation? Well if you want to make those DX contacts you will need to be aware of when propagation is best for conditions to your target. One way to do this is to listen. Another is to check propagation sources such as WWV mentioned above. You can also get familiar with the propagation tables presented monthly in QST and CQ magazines. These charts will tell you when to expect the best propagation on what bands and at what time for your location to other areas of the world. An excellent source is to check the DX clusters online or by packet radio. This can give you current information about DX activity that is happening right now.

[ThatGuyThatDrawsStuf]

I looked all over the internet and only this video helped me understand the different layers well enough to explain it to other people.

[krpb]

Thank you for such a great job on the video! I am using this in my Technician class as an aid to my Instruction. My students have that "Light Bulb" turn on after watching this video :)

[phredyh]

Dan... This the best presentation of propagation I have seen in my 30 years of haming. You may go to a lot of different sources to get the same info but this short video brings it all together. Thanks for your effort. I will watch it many times as there so so much to digest... de KE0EF... Fred

[HamRadioDX]

Great video. One of my favourite propogation modes is via Sporadic E on 6 meters. 73

[mike]

@4:53 - I think "Geomagnetic storms" is the correct term.
Thanks for the video.

[DoronTirkel]

Thank you Dan. This excellent video taught me a lot about HF Propagation Forecast Chart. As a result, I shared my knowledge of this fascinating subject on my QRZ and QSL websites. 4X4XM Doron Tal (Tirkel)

[Aerospaceman]

What's happening to one side of the earth is slightly different than the other depending upon whether or not its day or night. The layers or boundaries shift their densities like a diode or capacitor plates thereby affecting the frequencies which are also affected by solar flares and Sun spots. I'm guessing earth is a big circular M & M with candy coated layers. LOL!
I like your simple explanations. Thank You. Bill Spokane Valley, WA

[frankreiserm.s.]

Great. 73's from KB2VNG, Caldwell, NJ. Frank

[thebettermanblueprintproject]

Do you have a written version of what you're saying so I can read it as well as hear it?

[bibassemichel]

Merci pour cette vidéo. Est-ce qu'un plan d'eau (bassin de rétention etc.) peut modifier la qualité de réception d'une antenne qui fait que de la réception? Et en particulier dans la gamme VLF?

[HamRadioLiveShow]

Great video. I host a YouTube channel that helps to encourage people to come into ham radio. I’d like to use this video to help explain the solar Forecast I get every show. It’s nice to have a “fresh voice” as part of this show. I’ll be sure to include your YouTube channel as well as a link to it in the description section. I have subscribed my friend. Thank you for taking the time to create this. It helps all of us..

Larry
de K7HN

[PhiberOptik]

I cannot find an answer to this question among the amateur radio community and a meteorologist I asked was not certain. - I used to live very close to a very busy airport. I would always listen to ATC on my scanner and I always heard strange noises when an airplane would go overhead (yeah, so close and near the lowplanes that it rumbled the house and ruined the roof..twice) Anyway, does the immediate change in the atmosphere created by wake turbulance and wingtip vortex affect the propagation of electromagnetic waves?

[RESISTAGE]

my question would be then if at night you can hear radio from all over the world how is that possible when on the other side of the earth it is still a day and radio waves should be directed back to Earth with D or E layer, making it short range communication? Thank you.

[danneumann]

has anybody created an artificial ionoshere that blocks or redirects radio waves?

[satirikos]

Question, is it possible with a Ham radio to measure the distance to the moon based on the time it takes to travel and return?

[joergdrexhagen]

What Frequency do I use?
If you have this question, you are not alone. Everyone who communicates with HF radio has the same question. We are always looking for the best frequency to use for communications.

check out this video: 
Where & When Propagation app for Marine- and HAM Radio

[hgfhghghgfhfghgfhghg]

I thought on rare conditions you can talk on 6 meters around the world and you can reflect from 0-50mhz

[indridcold]

Solar flux index this day 20 February 2019, is 68. Propagation is non-existant down to 20 megacycles and a bit lower. I have set up quite a few amateur radio stations for others. But I hesitate to get my own license with dismal propagation. VHF and UHF surplus equipment from other radio services are cheap and easy to convert to amateur radio bands. Even new VHF and UHF amateur radio equipment is very affordable as well. However, HF surplus equipment that can be converted to amateur radio bands is very rare. The new HF and even used HF equipement for amateur radio is very expensive. I can not justify getting hf amateur radio equipment with such poor radio propagation conditions. It is an ugly time to bed in any sort of radio hobby today.

[peterhoebarth]

Tesla say: Transmission only ground waves, not space wave = flat earth

[CharlesFockaert]

Why are you assuming a spinning sphere Earth?

If EM waves (radio waves) are reflected off the ionosphere when those waves are transmitted from the surface of the Earth upward towards the atmosphere, what's stopping those same EMWs from reflecting off the ionosphere when they are transmitted from the alleged spacecraft allegedly orbiting above the Earth and thus never penetrating through the Earths atmosphere and reaching a transceiver on Earth? In other words, how does the alleged ISS communicate with Houston or JPL?