If you're interested in radio, this is the best video I've found to start out.
@misionesmaderas9053 жыл бұрын
@صادق حسن التميمي البصراوي aáataayaáyÁpyyaytyyayuay9yyayaaayytaayaytyy0yytólotáóoķoä7ttýatyayaaaaaaaáyaĺñkljjlmvmbmblb00ápa
@TheOnLineEngineer11 жыл бұрын
I am glad you and your students found my video tutorial useful. Thanks for your kind words. Russ
@ToolFan682 ай бұрын
The earth is flat. The idea that radio waves would need a curved earth to propagate makes no sense.
@krishh177 жыл бұрын
a must watch video for everyone trying to get into RF. many basic topics clearly explained. thank you !!
@zengineering64864 жыл бұрын
Agreed
@jhettish10 жыл бұрын
Outstanding video. I plan to require my employees (who are not trained technicians) to view this to give them a few more things to think about. I've had a ham license for 53 years and have been in the two-way and broadcast services industry for 42 years. I've been in business 31 years and I didn't know about the "solar winds" night time effect on the Ionosphere. There's always some thing new to learn before we ending up leaving this rock.
@asifpaLash7 жыл бұрын
water blocks radio signal is not true. actually water carries rf further. when ever i go beside a river or lake or sea i get stronger signal than other places. i think they need a more to discover
@numbynumb7 жыл бұрын
asif iqbaL paLash That's because the signal bounces off the water's surface. It cannot penetrate the water very much.
@asifpaLash7 жыл бұрын
then why i my music volume on radio get stronger while i am beside a river...
@asifpaLash7 жыл бұрын
i observed similar incident in many places.
@84bB46 жыл бұрын
FM - 11-666
@davidschmidt60135 жыл бұрын
Fantastic vid. I was trained in Strategic Microwave Communications Systems Repair (26V20) years ago in the Army. Late 70s. They never had a vid as clear as this. Sure would have helped. Now I teach Middle School Science, and when we get to the sections on Energy, Electricity and Magnetism, I use vids like these to get the principles across to the kids. Thank you for taking the time to create and share this vid.
@jenko7016 жыл бұрын
Absolutely the best qualitative antenna video out there. You hit all the main points.
@neventomicic3308 жыл бұрын
This video is really great. I am astrophysicist (working in optical and infra-red astronomy) who will go observe soon with a large radio telescope, thus I needed to learn as much as possible about radio stuff (telescopes, antenna, polarization, receivers,...). This video really helps. Thanks!!
@giovanniblythe39442 жыл бұрын
What happens to the electrical signal as it reaches the radio wave? Does it generates a high frequency electrical signals and low voltage or maybe I'm mistaken?
@jpwest4 жыл бұрын
This is also one of the best videos about radio in general and broadcast in particular that I have seen. I already took a few screen shots of it for a presentation that I made about radio relay systems for a sales colleague. I am RF system specialist, engineer and long time licensed ham as OZ7ACS too. I am trying to teach electronics and RF to my son and then I stumbled upon this excellent video. Keep up the good work and please make more videos like this one about more subjects within RF and antennas!
@wa9kzy3265 жыл бұрын
For explanatory purposes, I like the optical engineer's view of RF; photons coming off the antenna in response to the varying AC driving voltage. As the driving voltage builds, it excites the conduction electrons into a higher orbit, and when it drops the electrons return to a more stable orbit, releasing their energy in the form of a photon at the frequency of the driving voltage. The photons, traveling from the antenna, are picked up by the receiving antenna and induce a voltage in the antenna elements.
@Varzo114 ай бұрын
I searched through numerous videos looking to understand radio waves and antenna length and by far this is the best video I found. Thank you so much for making this video!!
@welshpete125 жыл бұрын
Excellent , the best explanation I have ever seen . I'm an ignoramus when it come to how radio works . And you have helped me a lot to understand how it works . Thank you for posting !
@igorandradepontocom7 жыл бұрын
The best video about this issue I have saw. Congrats!
@kingbee15007 жыл бұрын
Agreed...a fine basic intro to terms and good simple graphics.
@evelynesimon57587 жыл бұрын
This is a very very helpful video, clarified most of the issues I haven't been able to understanding for years. Thank you so much.
@wadepatton24335 жыл бұрын
11:02 is what makes world wide radio contacts a regular thing for Amateurs and Broadcast stations. It's a bit more complicated than presented here and many more factors play into it. The lower frequencies are more predictable and the higher ones can be "magic" hence the "Magic Band" of 6 meters (50-54mHz in USA). Enhanced propagation is what makes things exciting on the amateur bands.
@artur198465 жыл бұрын
This one single video is more informative than hundreds of articles about radiowaves I've ever read! I had no idea that radio waves had polarity! Thanx a lot!
@mrtracyut6 жыл бұрын
An excellent video with many good animations. I imagine you took quite a long time and a lot of effort to add so many animations to your slides.
@Panzerbeast6 жыл бұрын
Brilliant video. Don't know why anyone would not like this.
@VintageLabSilvioPinheiro10 жыл бұрын
simple and sharpen explanations ... Very good 73
@curtisdesselles86917 жыл бұрын
This is best video on radio that I have ever seen. Excellent work!
@chrischarters3765 жыл бұрын
As a young ham i used to love 'sporadic E' some summer nights to talk up to 100's km's on my 2 metre homebrew. The E layer in the ionoshere sometimes ionizes in a way that VHF signals would bounce off it thereby effectively lengthening the horizon, sometimes for seconds or minutes occasionally for hours lol. In the 1970's govt's published prediction tables for HF propagation over DX, as different bands fron 3 to 30mhz would bounce repeately at different times. This enabled os staff to warm up the next Tx ready for opening, to keep those RTTY's going. Music to my ears!
@ynagpaul4 жыл бұрын
Outstanding! It’s unimaginable that the radio frequency waves travel at the same speed as the speed of light. Thanks for all this Good information.
@wittech87957 жыл бұрын
Excellent ! thank you for sharing this
@brianshanahan38785 жыл бұрын
Excellent video, narration and animationns! This is EXTEMELY helpful for me to send to my sons who I am getting into Ham / Amateur radio! Thanks so much and keep them comming! :)
@PLA693 жыл бұрын
I know it's a lot to learn but this is the first step for people to understand how 5G works instead of being afraid of it.
@DavidVine-DOCVIDPRO3 ай бұрын
This is an EXCELLENT educational video. My only suggestion two 7+ minutes long Parts 1 & 2. Thank you.
@Glorybetothelamb4 жыл бұрын
Brilliant! This is the best informational video I have ever watched on you tube! Very easy to understand!!! Radio waves have been difficult for me to grasp but this video helped me under stand soooooo much! Thank you sooooooo much!
@pranitashewale31778 жыл бұрын
This video was really helpful. Instead of reading about radio wave watching this video was much worth. I wish it could have been in much deeper way.
@magnitudematrix26537 күн бұрын
I get it. You are matching antenna geometry to a holographic radio image in space to tune the frequency in space. Capacitance, reflectance and phase make space. Excellent video.
@pcbona5 жыл бұрын
I have looked all over the place for some explanation about radio polarization. Especially what circular polarization is. Never would've thought i'd find the answer in a youtube video. Very detailed information in your video, thank you very much.
@Loady4207 жыл бұрын
Not sure about anyone else. This was very helpful on understanding how to use my RC to pilot my drone much farther I didn't understand that I had to be pointing my flat panels at the craft.
@AnylaAdemaj10 жыл бұрын
so simple, yet so helpful ... thnx!
@TheOnLineEngineer10 жыл бұрын
Dishes are used for very high frequencies, in the Gigahertz. The parabolic shape of the dish focuses the high frequencies into a very tight beam, this allows almost all the energy to be directed in one direction. When receiving the dish again focuses the received signal and amplifies it. Dishes work with both horizontal, vertical and circular polarized RF.
@KyzylReap11 жыл бұрын
This is very well done. Clear, paced well, good animations. I used it as part of my College for Kids class on amateur radio. Thanks.
@MartinTedder4 жыл бұрын
Came for clear information, received clear information. Thanks for making me smarter today.
@subhashchanderjain92656 жыл бұрын
Outstanding Video. Concepts explained in simple way.
@jtownshend7 жыл бұрын
Excellent video. Best one I've seen so far. Many thanks!
@dougelick83975 жыл бұрын
I believe the crossed polarity as you've described is "dual polarity". Circular polarity is when the horizontal and vertical signals are out of phase and create a rotation in the polarity. A spin stabilized satellite most clearly demonstrates how circular polarization works. This WIKI has an excellent graphic and explanation: en.wikipedia.org/wiki/Circular_polarization
@pinklemonade20145 жыл бұрын
wow, thank you. literally everything I wanted to know regarding this subject was answered in this video.
@enzed11904 жыл бұрын
a brief but lucid tutorial. thank you for posting it.
@trevorflama68258 жыл бұрын
wow!I been missing this..this excellent
@meyou96553 жыл бұрын
Where was this in 1992, when I really needed it. Books and more books.
@Julillo242 жыл бұрын
Simple, but powerfull, very didactic, better than many of our university teachers, best regards from Colombia OnLineEngineer
@rafaellastracom64116 жыл бұрын
I´ve been thinking about this video for a while now. Thanks!
@Victoria-if8ep3 жыл бұрын
Very well explained! A really great video, with very useful information. Congrats!
@Grossschwartz7 жыл бұрын
Thank you very much for publishing this video. Great Help
@Xioxio00010 жыл бұрын
Thank you for this very lively and informative video, I now understand RF a lot better than I did before watching. Good job!
@matthewjameswalker7215 жыл бұрын
Great work. Clarified why I would like to have a circularly polarized yagi for satelllite work.
@jorgeriverajr17455 жыл бұрын
Just amazing, thank you!!!
@Supermakfamily7 жыл бұрын
its so organized and useful, thanks so much for making this
@frankreiserm.s.80394 жыл бұрын
The tallest antenna was the Warsaw antella at 2,120 feet, but it collapsed. Today, the tallest antenna is the Tokyo Skytree antenna at 2,080 feet. In Ontario, Canada, the CN Tower, standing at 1,815 feet, is an antenna that also serves as an observation tower for people. The smallest antenna is only 14 mm by 11 mm. This was a great video. They should have mentioned the layers of the atmosphere, identified by capital letters (D, E, F1 and F2, increasing in height in the ionosphere), which reflect radio waves, and are different between day and night. For example, only during the night does the D layer reflect back to Earth SW radio waves, such as 2 meters to 80 meters, used for continuous-wave communication (Morse Code) by radio (Ham) operators. Frank Reiser M.S. KB2VNG Frank Reiser Video/Audio Service Caldwell, NJ., U.S.A. (973) 226-3476
@cindyheinrich98212 жыл бұрын
Very useful information and done in a very understandable way. Thank you.
@dtaylor4200 Жыл бұрын
This is better than all the ham technician study vids.
@Jakefrc10 жыл бұрын
Awesome video! Thanks heaps for putting the time in to make it. You've helped me understand the way radio waves behave a lot better. :-)
@frankm20225 жыл бұрын
Great job! Very clear easy to comprehend.
@rashidalinawaz90336 жыл бұрын
Awesome, very informative. I have got many answers to the questions that i used to think when i was a kid haha. Thanks for sharing and making this wonderful and informative visualization about Radio Waves.
@pranavinalla52997 жыл бұрын
well explained sir. now i am doing a project on designing an antenna. your video helped me alot.
@sabaudzilauri73073 жыл бұрын
Absolutely the best video on this subject!
@MrM2hb8 жыл бұрын
Great video. Thanks for doing it.
@user-mr3mf8lo7y Жыл бұрын
Great explanation. Much obliged.
@philorkill5 жыл бұрын
Great explanation. Thank you!
@hemanthsiripireddy87176 жыл бұрын
Outstanding vedio & interesting &l like it
@bennyhaastrup736910 жыл бұрын
Very clear and good video; thank you!
@reyasentista40444 жыл бұрын
amazing presentation. very well presented.
@jonidimo9 жыл бұрын
Excellent.
@hamzasiddiqui49286 жыл бұрын
Understood it easily with the great explanation
@suchagul43408 жыл бұрын
Very useful comprehensive video, Thanks.
@taneliharkonen24639 жыл бұрын
Just awesome video! opened many whats-thats for a newbie. like circular polarisation
@TheOnLineEngineer11 жыл бұрын
Mostly its the size and shape of the antenna that affects how much of a frequency it absorbs or emits. A wire strung out will transmit and receive a number of frequencies but not very efficiently, nor with any directivity. Sizing and shaping an antenna allows it to resonate more easily with a smaller range of frequencies and its shape lets it direct the area or pattern it transmits to or receives from. For transmit antennas they get bigger as the power they transmit increases. Hope this helps
@COMB0RICO6 жыл бұрын
Well done. Thanks for Austin, Texas. May Jesus Christ bless you.
@Mukeshmiktecrep8 жыл бұрын
Well described and good video
@zouhair1299 жыл бұрын
great video, valuable informations thank you (y)
@jaredturner30639 жыл бұрын
Thank you for the awesome video. Very interesting. If you have the time will you make a complimentary video explaining how the information is actually encoded into the wave?
@Cepheid_6 жыл бұрын
Signal processing can get complicated fast. If you are interested in some of the math behind it, look at 3blue1brown's video on Fourier transform, explains the topic amazingly. I haven't seen a good video explaining signal encoding yet so I'm all ears for recomendations.
@kg6qzx5 жыл бұрын
It’s called modulation and can require the understanding of circuit design but a very simple explanation is that bandwidth is directly proportional to the frequency of a carrier (or transmit frequency). The higher the frequency the more available bandwidth (BW). The information is “modulated” onto the carrier via a circuit called a “mixer”. The information can never exceed the BW or the carrier frequency. The trade off is that higher frequencies become much more directional and tend to experience higher propagation loss. Microwave signals need to have the antennas directly lined up for maximum transmission. This video does a good job of relating basic RF and mW antenna propagation. If you like math and are interested in this topic Engineering is a fascinating career path and is well worth the effort to get a degree in Electrical Engineering. All it takes is a desire to learn. I’ve been an Engineer for 30 years and still learn new things all the time. Not trying to preach but a degree will serve you very well over a lifetime.
@tinkeringengr4 жыл бұрын
A degree is fundamentally useless. Use the internet.
@Runtothemusic9 жыл бұрын
Well done...very informative. Thank you.
@mrflashhd70889 жыл бұрын
Thanks, this really helped on some school work I was doing recently! :)
@NoosaHeads4 жыл бұрын
Excellent presentation.
@jaskiratkaur860210 жыл бұрын
awesome video.!. thank u so much for uploading :)
@yoramstein4 жыл бұрын
Great simple to understand video.
@mahmoodtariq75358 ай бұрын
Very nicely and detailed demonstrated.
@ashwanidhiman91869 жыл бұрын
fabulous video! Appreciations:)
@kshitijwagle68017 жыл бұрын
excellent animation with explanation ! thank you sir. !
@philrogers45353 жыл бұрын
What an awesome video! Thanks.
@hanestshirtsarecool3 жыл бұрын
Excellent, Excellent, Excellent!!!! Well done video
@bigfist8555 жыл бұрын
Thanks for your hard work Best vedio on KZbin
@anthonywstanton8 жыл бұрын
Excellent production! 73 de AC6GM!
@PratikPrajapati8410 жыл бұрын
Awesome.. Thanks for making this video.
@noobmartin5 жыл бұрын
Just as an additional note - EM waves may be harmful if the radiation intensity is large enough (so-called "thermal effects"), but the health effects when exposed to EM waves also depends on the characteristics of the waveform which is transmitted. A number of studies have been performed to research the effects of EM waves, particularly with center frequencies used in cellular and Wi-Fi, combined with the actual waveforms to determine whether the exposure has any effect on mammalian health. Some of these studies have shown that these particular center frequencies and waveforms are coupled to e.g. VGCC activation in cells - but don't take my word for it - go ahead and read the research papers!
@almirandrade4584 жыл бұрын
On 10 W radios, for example, there is advice on the danger of seeing the waveguide directly or standing in front of it. Yes, radios are hazardous.
@mayurbalwani72777 жыл бұрын
Best tutorial! Thank you very much!
@rmgross394210 жыл бұрын
Easy to understand, and information shared at a good speed.
@allenmiddendorff20682 жыл бұрын
Nicely done.
@expert2444 жыл бұрын
Excellent! Thank you!
@tabiambaya1003 жыл бұрын
That is resourceful. thanking you
@LPArabia10 жыл бұрын
Very well presented. Thank you!
@FatmaSamyFAS10 жыл бұрын
Great introductory video 👍👍
@nicolaeprisacaru57597 жыл бұрын
perfect lesson. Thank you
@alberthuang77106 жыл бұрын
Great presentation!!
@mohit01able9 жыл бұрын
Awesome of videos i have come across on Radio waves!..
@sandilempontshane43085 жыл бұрын
simple and on point
@abdulazizalbesher21274 жыл бұрын
The Best Among You , Are Those Who Are Best For Others .