6 жыл бұрын
11 жыл бұрын
12 жыл бұрын
12 жыл бұрын
12 жыл бұрын
12 жыл бұрын
12 жыл бұрын
12 жыл бұрын
12 жыл бұрын
Пікірлер
@AttleeLarry-p5i 2 ай бұрын
Young Brian Johnson Maria Rodriguez Kevin
@markarthur1083 9 ай бұрын
thank you
@rajatgupta6167 Жыл бұрын
Hey there , all well? Long time and no video of yours came so just a follow-up comment 😊
@WEBBERSPADE Жыл бұрын
Feel free to find me on LinkedIn and you'll see what I'm up to. I'm about to give a seminar on design for production that will be recorded next week. Search for Robert John Webber who works for Powell.
@wesleymccravy901 Жыл бұрын
So much positivity for a clusterfuck of demonstration. I spent more time being grossed out by your elbows
@WEBBERSPADE Жыл бұрын
Mate, I made this video in 1 take over 10 years ago! Give me a break. If I knew it would have got over a quarter of a million views, of course I would have edited it better.
@ayushsoni8983 Жыл бұрын
One of the biggest mystrey is solved today😅
@jacksonnogueira1865 2 жыл бұрын
Parabens
@exabyte2402 2 жыл бұрын
Great explanation, tranks!
@victorsantana4773 2 жыл бұрын
Finally a clear cut answer, thank you.
@rajatgupta6167 2 жыл бұрын
Hey man, I just want to say I graduated my engineering because of your videos , I hope you will get good things in life <3 I graduated in 2016 and its been a lot of years now but It felt great seeing you posting again , keep up the good work buddy!!
@xJoe90 2 жыл бұрын
cool cheers
@rajatgupta6167 3 жыл бұрын
You dont know me but this video made me pass my dc engineering exam
@WEBBERSPADE 3 жыл бұрын
I'm extremely happy to hear that.
@yurisnaker 3 жыл бұрын
the power of what components ? the same that the voltage ?
@StrsAmbrg 3 жыл бұрын
Your hand move too many unnecessary.
@abdullahmohammad5613 3 жыл бұрын
God bless you! <3
@wishwawijayasinghe2252 3 жыл бұрын
Life saviour , keep it up good work :)
@rksingh8518 3 жыл бұрын
Robert this is excellent explanation.
@WEBBERSPADE 3 жыл бұрын
Thanks. It's a real pleasure to have helped you
@jamilajamila3658 3 жыл бұрын
camera position is very bad. please fix the camera position.
@WEBBERSPADE 3 жыл бұрын
Hi Jamila, I recorded this 9 years ago, in 1 take. My first ever video, and no idea that it would be this successful. I'm obviously happy I've helped so many people and if I knew at the time, I would have made it more professional.
@jamilajamila3658 3 жыл бұрын
@@WEBBERSPADE but the lecture is quite good.
@MidnightCloak29359 3 жыл бұрын
thank you so much for this video! I've been trying to understand this concept for days for a project and you made it so easy! It really is a joy to watch your videos
@RealityCheck6T9 4 жыл бұрын
Thanks for the video. I came here because I heard that "Modulations techniuqes like QAM and QPSK are used for optical signals". I'm looking to understand how light is used to convey data through fibre optic lines for the internet.
@nicogaldiano1933 4 жыл бұрын
Thank you so muck Sir! You've helped me understood this topic.
@WEBBERSPADE 4 жыл бұрын
A pleasure to have helped you Nico. Good luck with your study / job.
@priyansukushwaha5195 4 жыл бұрын
What,about current
@Ryxmyx5277 4 жыл бұрын
Thanks
@sophiacabras5687 4 жыл бұрын
Great helppp :))) thank youuu
@darkblood2275 4 жыл бұрын
Wow...Robert. That's super way of explaining. Was dumb about 'QAM'...but no more...Kudos to you.
@BenedictBrand 4 жыл бұрын
Great Video Robert, I spent 10 years as a fixed wireless access engineer working up to 256 QAM for PtMP radio systems for Cellular back haul. I always had an understanding of this, but your video has made it much clearer.
@WEBBERSPADE 4 жыл бұрын
Glad I could help. Shame you didn't find this earlier as I made it around 10 years ago!!
@BenedictBrand 4 жыл бұрын
@@WEBBERSPADE wow, time flies, I just worked it out, it was 2000 - 2009! I've since got into KVM over IP (its different, but many of the principles are relevant). I'll share this with my team as I've often tried to explain it to them.
@WEBBERSPADE 4 жыл бұрын
@@BenedictBrand do you have LinkedIn? I just tried to find you but couldn't. You can find me if you want? "Robert John Webber".
@dbagnis 4 жыл бұрын
Wow! I need that. At the school don't pay enough attention to this and now i need it. Thank you very much. And congratulations for the video!.
@mubashirhasan2329 4 жыл бұрын
this is such simple way of understanding thank u sir
@baberraza4231 4 жыл бұрын
based on what I understood from the video, the second point on the waveform deriving to binary 11 should be at -1 (not 0). at 17:48 of the video.
@ghaidaa.s.m3922 4 жыл бұрын
Thankyou very much agreat job
@murtadhamohammed4116 4 жыл бұрын
Why 10 log not only log
@RishiKumar-nl9es 4 жыл бұрын
Awesome Explanation Robert.... I believe you are the outstanding Professor..Thank a lot and keep posting more video..
@RishiKumar-nl9es 4 жыл бұрын
Awesome Explanation Robert.... I believe you are the outstanding Professor..Thank a lot and keep posting more video..
@oscaranton4400 4 жыл бұрын
Great piece of work Robert, thanks so much. Do you have any complementary video explaining how X.QAM (X>4) waveforms are built? I mean constellation points with no constant amplitude unlike QPSK has. Thanks!
@oscaranton4400 4 жыл бұрын
Please disregard my comment. I found the 2nd part! Again thx a lot
@GiangLe-rx2sy 4 жыл бұрын
what is 16QAM 2/3 or 16QAM 3/4? help me <3
@ahmedgaafar5369 4 жыл бұрын
are you related to Mr Weber the famous Physicist that has his name of the magnetic flux unit? those 3rd harmonics are here because of the clipping of the amplifier characteristics and shaping the sine wave to look like a square wave which only contains odd harmonics...you made it sounds like the 3rd harmonics are the reason for the clipping which is rather wrong...don't you agree?...we are concerned about the 3rd one because it is just after the fundamental frequency in odd sequence 1,3,5,7,.... the 5th and up will be weaker powers and can be ignored. i don't know Rob... you have a nice track but a bit vague.
@GodzillaGoesGaga 3 жыл бұрын
3rd and 2nd harmonics are not due only to clipping. They are due to the nonlinearity of the amplifier (eg saturation). Clipping is typically a hard limit on a power supply.
@ahmedgaafar5369 3 жыл бұрын
@@GodzillaGoesGaga thanx
@auriolus9479 4 жыл бұрын
Precise and simple! Thanks!
@lalitakushwaha1440 4 жыл бұрын
thankyou ! This thing was headache , now solved.
@WEBBERSPADE 4 жыл бұрын
I actually forgot I made this video!
@eirvingdiaz7185 4 жыл бұрын
34 minutes to explain binary numbers? 4 fuck sake!
@nurainkajola5093 4 жыл бұрын
My lecturer told me 16-QAM has 3 amplitude as against 2 amplitude as you've stated. What do you have to say to this???
@WEBBERSPADE 4 жыл бұрын
Hello. No I said that you have two choices of amplitude in both axis. So as long as the constallation mapping points (which is normally the case), then yes your lecturer is correct, there are 3 different amplitudes just from the different size of triangles you can make. Does that make sense? Thanks
@vijayseshan2641 5 жыл бұрын
Really good. thank you. I had same question when I am going though amplifier spec. Thanks for explanation
@nileshparmar2561 5 жыл бұрын
Awesome sir....
@WEBBERSPADE 4 жыл бұрын
Thanks ;-)
@Rainbient 5 жыл бұрын
But I’m 15!! Nooooooooooooooooo
@kamalkhaja9508 5 жыл бұрын
Very well explained, thaks
@liamporter5782 5 жыл бұрын
You are awesome Robert! I just come here to find how to calculate TOI point and didn't get anything except a lot of good information, thank you teacher.
@maxwarfield6699 5 жыл бұрын
Do you have a plane to catch? Why are you talking so fast? Some of us are enthusiasts or hobbyists who want to learn - if we were professionals in the field, why would we watch this video? Please slow down, or don't even bother, mate.
@kostiantynyushchak1288 5 жыл бұрын
Good!
@sonus289 5 жыл бұрын
Can this also be done for hf? Lower freqs than 2.5g
@sonus289 5 жыл бұрын
How does propigation affect it?
@sonus289 5 жыл бұрын
So is the antenna creating the bean and the rotating vorticy of the beam? Or isit done to multiplexing at the transmitter or at the amplifier or is this all done as a result of digital encoding and decoding I'm really just finding out about this today and trying to understand it
@Rainbient 5 жыл бұрын
10:17 Finally that line at the bottom was erased! I thought I was going to go nuts! Being OCD sucks!