How do antennas work?
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- Опубліковано 25 чер 2024
- If you have an RC model plane, boat, helicopter, car or drone and want to know how antennas work then this video will hopefully explain some of the basics.
More on antenna gain: • FPV antenna gain and r... - Наука та технологія
What makes this good video even better is that there is no LOUSY LOUD BACKGROUND MUSIC. Thanks!
Two antennas got married. The reception was wonderful.
I went to a wiccan wedding once
When they toast the bride....they really "toast the bride"
Until the DJ played Beyonce
@Bob Down: I heard it like this: "Did you hear about the two antennas who got married? The service was so-so but the reception was wonderful" ...
@@KeithCooper-Albuquerque oh, that's funny, cz I heard it like this... Two antennae were married on my new SW with DSP and the reception SUCKED!
@@notlikely4468 Was she Hot? Oh, never mind.
One of the better explanations of antennas I have ever come across.
Thank you de N3GAQ
I have seen various youtubers trying to teach about ANTENNAS, but you really know this profoundly and share it whith us. Every minute is golden Thank you!
Wish I had this guy as my university's professor. Everything becomes so clear after his explanations.
TY, you're the best!
I wish he was reading children's stories, well i guess he is..I enjoy his presentation, sound fx and all, Im also a mature age first year engineering student
Ricardo
yeah i had a professor like that
what i have found in my time is this
there are people who know certain bits of information, but then there are bits they don't know.
how you tell the difference is this...
When one can explain something simply, it means they clearly understand it,
when they stray away from their normal use of words and tend to speak quicker or use words that are more complex it usually means they don't understand the subject.
a good example of this in I.T. is this..
ask a technician does he know how a hard drive works hehe
he'll likely say.. he does
then ask him to tell you step by step
starting from the CPU, and assuming the CPU is sending data to the hard drive
ask him to explain *Every single Step* that the data takes
and what when this happens
he'll tell you the data gets to the SATA port where the drive is connected
it goes up the cable
HEHEHEEHE and then something something in the middle here, that he skips over and........
hoping to god you didn't realize he then says
the data is written to the hard drive platter
now.. if you pull him up and say
hang on...
so... from the SATA Port on the back fo the hard drive, HOW EXACTLY did the data make it to the platter
LOL
it's funny when this happens
but yeah
that's how you tell
if a person skips something, Purposely make a point of slowing them down
you'll usually find they have gaps in their knowledge
but when there are no gaps, it comes across like this guy is saying it,
i pride myself on filling my gaps
and it's awesome when someone like this comes along,
I've been fortunate to have around 7 of them thus far that have taught me
that's why i know what i know.
be cool mate
Foxy rollins just play this video for your kids, I dozed off for at least twenty minutes.
Great video. Easy to understand for the parts I was awake.
learning is hard work
To properly understand your computer.. you need a double degree and even then you're not totally covering it
Pedagogy at its finest, this man just does not only know the subject by heart, he also radiates the information in the most resonating way that our brains can perceive. Mate, my lecturers at uni has lot to learn from you honestly. Good work. Appreciate the enthusiasm.
"radiates the information" ... "resonating way"
Har har
Is he on the national pedagogy registry? Does he have to tell his neighbors if he moves?
Pedagogigally this is not as simple as you perceive it. In YT global audience this is a bit too fast language. I appreciate the knowledge presented in this video but it is not pedagogigally at potential.
You're the person I send people to when I need to show them how things work. Some of the greatest teaching I've ever witnessed!
Agree..Great teacher
I feel so priviledged that I could watch your explanations about antennas. Great passion and great teaching talent! Thank you very much, Sir!
First time I've watched a 35 min lecture without getting bored
Great class.
Spent several years at Purdue and never had a professor quite this enthusiastic! Thanks for the great content, it was well appreciated and truly enjoyed!
This man made me feel more welcome to his whiteboard video than my family has made me feel during this quarantine. This video was a perfect mix of comedy with knowledge. Arigato.
Don't take too much stress in life. It will be alright.
Don’t take stress mate. Mitchi is there waiting for you. Everything will be fine. Keep Calm and Bazinga !
@@samueljohn79 tf is that and I appreciate the reference mentioned in the end.
@@rudrakalra5998 is the bloody teknologi
😂🤣😂🤣
Love the swing/pendulum analogy! I had never thought about it like that. I feel like understanding that will change everything for me!
You are an AMAZING teacher! Thank you very much for this lesson. I’m starting from scratch to educate myself in this subject. Always thought it was a difficult matter, but you made it so clear and easy to grasp. Good luck and Blessings to you!
Check out Tibees too :-)
SO HELPFUL!!
I agree completely with this comment. I’ve visited this topic several times in the past, walking away thinking, “this is the most complicated thing I’ve ever encountered”. This video has given me back the confidence to dive in again.
This is the first video I'm watching about this subject with little knowledge in advance and I'm understanding so much all thanks to this great gentleman and his awesome way of teaching .
Can't thank you enough sir .
Many years worth of accumulated knowledge transmitted, received AND understood in slightly more than half an hour.
Now thats some antennae you're using ! Thank you.
Second decade of the 21st century, and you still can't beat a knowledgeable instructor and a white board..;-) Well done my friend.
I wish I had such a knowledgeable and enthusiastic professor. 👌
Great practical explanation of antenna theory and operation. This is sufficient for most people to understand the basics. Really good explanations boil down the theory to the most essential parts without getting bogged down in the details or too many equations. It would be great to see this introduction video followed up with actual examples with a bit more theory where the numbers are plugged and secondary effects of the antenna geometry, cabling, and circuit connections are addressed.
Great talk on how antennas work. Folks who are studying for their entry level amateur radio license would benefit from this. Thanks - KX1B
After nearly a lifetime of trying to figure out how transmitters and antennas work, you sir have helped immensely. Although there are still holes in my understanding, I have subscribed to your channel and plan to watch many more of your videos. Thank you very, very much!!!
This guy explains in a way that's both relaxing to listen to yet draws your attention. He's just a great teacher.
Some of this was review for me, but it was so well taught that I have watched this video in its entirety and I am subscribing to learn more. Well done! We need more teachers and professors like you.
Two antennas met on a roof, fell in love and got married. The ceremony wasn't much... But the RECEPTION was INCREDIBLE!!
The best video on how antennas work.
You sir, are awesome at explaining the antenna's operation. It's so simple to understand.
Excellent presentation and teaching skills. I watched the entire video, never knew that this topic could be interesting. Thanks for posting.
Get off the meth UA-camHitler
@Science Revolution This was what I wanted to find out and I was hoping he would explain. It is such an obvious question. Having explained about electromagnetic induction in terms of current flow there is no current flow in an open ended antenna
LOL - being a former microwave technician 40 years ago (including earth stations w/30M dishes), I got engrossed watching your presentation. Towards the end with your excitement, I went to the UA-cam gear to slow the video down from 2x back to 1x speed but found you were ALREADY TALKING AT 1x SPEED!!! Yo the man, Bro - thanks for sharing :)
Bing bing bing bing! Best "how antennas work video" on UA-cam.
You make an awesome instructor. I could listen to you for hours and not get bored. Well done! Great vid.
This is definitely the kind of videos which makes me love RCModelReviews all over these years
Absolutely!!!
We have found the Walter White of Antenna's :-) Fantastic explanation of something I understand reasonably well but could never have explained so brilliantly. And I understand even better now myself. Keep up the great work.
Thanks for the refresher! I haven't heard the term 'Yagi' since my school days...
The best example of Yagi antennas is the old roof-top TV antennas that were used to capture a VHF signal from your local TV station. If you were fortunate enough to have a rotor, then you could turn a dial on a set-top box and a motor would spin the TV antenna accordingly, allowing you to pick up TV stations in that direction...
Thanks for posting this detailed video, and JUST SO YOU KNOW, I didn't fall asleep! ;)
Its the first time in my life when watching educational video i didn't skip a single time.
Profound thanks. Finally, I can see the interrelationships between EMF, transmission and reception, linear vs helical antennas, and especially all of these in harmony with AC, resonance, pendulum harmonics, RH vs LH helices and their inability effectively communicate. OMG. I'm an emeritus prof (mirobiology, molecular and general genetics, cell biology, physical and theoretical biophysics) with hobbies in electronics, radio, etc. You just tied the prettiest bow on my neverending quest. Thank you. Thank you. Thank you.
This is the clearest radio wave exp. I have ever heard... This man is a genius.
One of the best antenna tutorials i've seen. Great!
Sir, you have a natural teaching talent. I was far from being bored. Thank you for that video and I’m looking forward to watching your other and future videos.
I have a learning disability and struggled all my life with learning ,Im 54 and like most got into CB radio as a kid and then lost interest. When I was 25 got my interest back. Afraid I wold make a fool of myself never took my HAM so I pirated between the ham HZ and CB. I have made and bought many antennas and understood about "Standing Wave"{surprised u didnt mention}. I cant thank u enough for ur 30+mins in making this vid. ,u showed me what I couldn't learn in years!{understand}
Antennas fascinate me. I have made a 450. Mz Yagi that many elements. This antenna was near five feet long. I hooked to my police scanner. And pointed it toward a city that was close to 35 miles away. I received their radio transmissions perfect. I only listen to Union Pacific railroad traffic now. I made a quarter wave dipole and it receives beyond my wildest expections. The antenna is standing in my bedroom. I have a Uniden BCD536HP. The antennas, telescoping and rubber duck antennas are like having no antennas. The railroad works on two meter 161.265 Mz most of these stations are 35 to 40 moles. Keep up the great videos , I have subscribed. Curtis
Excellent class on antennas!
Wish I had a teacher like you.
When I was young the CB radio was the Fad of the day it was a perfect hobby for me. But I soon found the usual 5watt CB radio with numerous channels (different frequencies) work better on some & less on others so I became very interested in building my own dipole antennas using plastic covered metal curtain rods with three legged ground planes. I became engulfed in the technology of antennas & spent a couple of years experimenting building my own power meters, frequency counters and standing wave meters etc. It was a very interesting hobby & I learnt a great deal.
The best thing to listen to amazing. Trying to hear what's being said.
When I was young I became engulfed in a CB radio.
The scientific inaccuracies as mentioned in the disclaimer at the start are very few actually. This video is a fairly correct explanation of antenna behaviour.
Your explanation of antennas and radio signal polarity was excellent. You presentation of antenna theory was better than I have ever seen and read. Keep up the great work. Cheers from your neighbor across the pond.
One of the best, simplest explanations of antenna theory I've seen. Great video!
That helped so much. All the terms I had been hearing but didn't know the meaning of were covered. Thank you.
Oh, you are alive! You just made me happier. Did you watch the video where guy is trying to figure out why your carbon steel cutting method doesn't work? Oh, he is so puzzled. While using stainless, haha! And he doesn't understand the bulbs part. And he didn't mention your funniest of all times remark about taking your glasses off.
Great lecture... I'm 'thick' and I understood it all. And he didn't need fancy graphics to teach it! Thanks so much!!!
Thank you for making the video! This is the most accessible introduction with examples that I could have asked for. Super helpful! Thanks!
Excellent video! I really appreciate the effort that you put in. You have a knack of explaining things that doesn't fly over the viewers head. Thanks.
Your method of communicating to the unknowing, is excellent; I'm glad I experienced your skills.
I think I may actually understand your antenna theory now! Thank You.
Your not boring at all. And I am studying for my amature radio extra class license here in the U. S. This video was exciting and helped me understand antenna theory, so I can now better pass my test, because I watched this video. Thank you.
Amazing teaching, such clarity. Thank you!
Excellent explanation, very entertaining and easy to understand. Thank you, Sir!
I found this video because I wanted to understand antennas in general. Great video.
I remember watching this years ago and finding SO much value in it! Your work truly helps the hobby! (Now I enjoy your videos at the airport with your friends the most. Such great fun and good people). My wife and I travel a lot so I'm adding a trip out there to my bucket list. She's not in the hobby but she's sat through enough of your videos that she'll get along just fine :-)
Been a HAM since '78, and have built dozens of antennas, and even did moonbounce with an OSI 6502 controller back in the 80s, but have never heard it antenna function put so well as "more metal in the game". I sure wish somebody had said it so clearly back in my college days, but even the professors didn't cut thru the BS like you do here.
Keep up the great work!
I may just start bending welding wire again...
Scott
I just started CB home unit with a Nice mint in box old Kenwood...Im using a 5foot car antenna on a 30ft pole in yard... What antenna and or device can i use to Reach Out a Little more.. on a good night i can Receive/Transmit 20 Miles.... Will a Bigger antenna make a Difference?
I think a lot of this video is rules of thumb for RC pilots that aren't 100% accurate. Radio waves aren't actually sine-wave-shaped in space. The reason polarization is important is not because of the area overlap. It's not *just* about having more metal, it also has to be shaped correctly.
You know you were mentioning about a moonbounce I did not have a ham radio license when I was a kid but in the 1970s I played around with the 11 meter band and don't a large Moonraker duplicate beam that was the name of a manufactured brand that I duplicated and I'm horizontal I used to do a moon bounce by just putting a site level on the antenna and aiming it at the Moon didn't really know where was going to end up I used to just see who answered me
Scott Marshall hi sir can I ask you a quick question? Is it possible to transmit/relay a LF signal from the source by using a non attached cable with a loop antenna or how can you amplify a LF signal? Sorry if that don’t make much sense I’m not a expert
@@thewhitefalcon8539 there is a disclaimer at the front of the video... saying he had to take some liberties to make it understandable to a wider audience. Most hobbyists don't GAF as long as it works... yes, I agree with you because I've made my living as an electronics tech my entire life, but this vid is indeed a really good explanation of the theory.
Sir I've tried to learn this simple concept so many times and you're the first man ever to explain it properly. Thank you.
You're an excellent teacher, fixed my attention on the subject, learnt a lot from it and boost it with comedy ( bing bing bing ) giving your audience great recall ! UNDERSTAND IT WELL, THANKS from your avid follower from the Philippines !
Thank you for this thorough explanation of Antennas and radiation patterns.
Ahhhh....That just squeezed all my thoughts, questions and university courses into a 35 min vid
Yeah, Prof. Heisenberg is pretty awesome.
Really ? What a loss of university courses that was...
These are the type of videos you excel at. very informative, I learned a couple of things thank you. Much better than the ranting about regulations etc
Holy crap, YOU ARE THE BEST!!! This trick with multimeter as a magnetic field detector is outstanding!!! [PURE nature]
Thank you for one of the best explanations of how an antenna works. The light bulb went off over my head...
Thank you.... this is exactly what I wanted... to understand the antenna “why’s “
The best lecture I ever seen, spite being on my third and last year of my bachelors. Please make more videos like this, I loved it 😄
I knew nothing about how radio transmission worked. Honestly I don't even know much about electricity so I thought I would get lost watching this. However, this video is amazing, and I didn't get lost at all! I know so much more than I did 30 minutes ago. Thankyou!
Ah I finally get it, thank you so much, I feel like I won a years worth of knowledge in one class. Serious I would pay for a semester with cost of books,reading, all the trips back and fourth and pray at the end , I learned and understand as much as I understand today.
Absolutely fantastic! Thanks for taking the time to make this.
You're so AMPED up about radio :D Love this video, thank you very much!
Best explanation of how an antenna works that I have seen! Nice job professor!!
The frequency of delivery resonated with my pace to follow. The direction of the content was just what I wanted to know. Transmission received, sir, and it is my gain.
From the USA, I really like the Video, thanks for making it and posting to UA-cam.
thank you Bruce, crystal clear as usual ! I love white board videos !!
I've learned so much from this gentleman. It wouldn't have surprised me if he wasn't a teacher at some point in his career. What a goldmine of information. ♥
You're my favourite old man on UA-cam.
Not old hes younger than me and i still havent decided to do when i grow up
WOW!!!!! THANK YOU, VERY MUCH, FOR THIS INCREDIBLY COMPREHENSIBLE EXPLANATION OF BASIC ANTENNA THEORY, AND OPERATION!!! AWESOME!!!!!!!
Great video, you explained a difficult subject in an easy way and that's hard. Thank you.
Material was synthesized incredibly well. Thanks for the great explanations!
So well explained. I finally understand something that I failed to grasp at school 40 years ago.
Sir, I've enjoyed watching your video every second of it, so clear and simple. all respect from Kuwait. whats make me wonder is why there is 90 dislike for this video !!!
Damnn thank you so much man.It sparked an interest of antennas in me.
Thanks for making a dry/difficult (for me anyhow) topic fun to learn about. Well done!
50 yrs troubleshooting security systems .... ( that are turning to miniature / micro radio transmitters like crazy ) I ve done much projecting ,( some successful ...others not ) trying to increase transmitter out put and or receiver gain . I wish I could crawl inside your head ,because you have an easy to follow and great wealth of R F knowledge ...I love this !
You are a wonderful teacher, sir! Thank you!
REALLY GREAT presentation! Thanks for posting!
I just got my first function generator. It's just a little $100 thing based on an FPGA. But ever since getting it I've been overwhelmed with thoughts of all of the different experiments I can do with it. One such experiment I wanted to try is to transmit and receive radio signals. So video lectures about antennas and practical RF design are really useful in helping me to realize that goal. Since I have no experience with RF at all. Before I got my function gen, the highest frequencies I'd work with were
Thanks .... I've held my amateur ticket for years, I work in radio .... Enjoyed the lecture!
Thank you for doing this video, it was very helpful.
You've made a complicated subject easy to understand!
Why did I spend half an hour relearning (twice) what I already knew? This dude is oddly entertaining.
Fantastic. I loved it . I have a much better understanding now.
Thank you!
Actually i watched the whole thing and i loved it.
Even tho I haven’t heard anything new I’m extremely happy UA-cam recommended me this video, amazing!
I've been dealing with electronics for about 45 years now but had forgotten a lot of what you covered here. Your presentation is very good and no, I didn't sleep... 🤣 Looking forward to more. Thanks!
This guy is awesome!
I enjoyed the video thoroughly!
Thank you for taking the time to explain this!
In addition to these great explanations, you seen like a really nice bloke. Thanks for the video.
Awesome. I've been out of the RC world for a few years but this was something I didn't know I needed to learn today, thank you.
Great, Great video!! Thank you for the education on the topic. You answered so many questions that I had harbored for years but never sought answers to. Much appreciated!
Thank you for sharing you knowledge of antennas! Your video is great!
Whiteboard videos are the best!
I'm not an expert but most plastics are transparent to the 5.8GHz FPV band, so the shrouds should have little effect.
But what will cripple your video is rain (it absorbs GHz frequency r.f.) and close proximity to any conductive materials (wires, metal objects, carbon fiber etc). In fact this is one reason why Tx antennas are raised up and usually placed at the edges of frames.
i found even moisture in the air cuts my range a lot, maybe 10% on a normal cloudy but not rainy day.
+TheMadmacs That's quite likely.
The attenuating effects caused by water increase with frequency, so in humid conditions switching from 5.8GHz to 2.4GHz will give you better, more reliable video and going to 1.2GHz would be even better.
yeah i hear the phantom can switch to 2.4ghz video for long range?.. eek! thats a bit dodgy for anybody else flying. we can't use 1.2ghz in the UK, maybe with a license?.
Thanks to spread spectrum technologies your use of 2.4GHz for video isn't likely to be a problem for other fliers but their transmitters will likely stomp all over your video signal.
As for 1.2GHz, it's (almost*) legal here in the UK provided you have at least a foundation ham license (easy to get, can be done in a single weekend and most 10 year old kids can do it without breaking a sweat) but that said, you're unlikely to have legal issues if no one complains.
Oh and one other thing, the antenna's for 1.2GHz are quite big and in the case of circularly polarised, fragile. Definitely not something I'd want to put on a quad!
*You're not supposed to transmit on the 1.2GHz band from an aircraft.