Watch the full interview with Sterling Mann and ask Derek questions on the element14 Community! bit.ly/3IIVEKl

So much to learn here. Looking forward to part 2!

Really appreciate your efforts. Keep it up and waiting for Part-2 🤟

We really appreciate you, future Derek

Thanks Derek for sharing. Antennas have always been captivating and fascinating. As hams, they are perhaps one of the best parts of the hobby to experiment and laarn from, and I encourage ALL to build their own when they can. 73

Thank you for this video. I did have trouble in understanding the section on Maxwell's equations. I will have to spend some time on that.

The best explanation of antennas.

Yeah, antennas have always been "black magic" to me, now they are "magic". Looking forward to part 2. I am learning a lot from your channel - thanks!

Very nice presentation

Wow so well explained 👏

Great job Derek 👍

Great tutorial 👌

Thank you for the informative presentation. Derek is sporting a sweet looking hat. 🤘

I had a hunch about this information but now it's all so crystal clear.

That was great... much more of that please! :)

Yay! Calculus and linear algebra!

great explanation ! ♥️🇲🇦

WHERE IS PART 2!? Not out yet? Nooooo, can't wait! Thank you, my favourite part was at 11:00.

very kewl :) like such topics

The discussion of the transition from separate E and M fields in the nearfield to an EM field in the farfield was a little muddled. The discussion in wiki is pretty good. One picture that is missing is the transition from either a high characteristic impedance at the antenna-free space interface from a dipole, or the low characteristic impedance from a loop antenna to 120 x pi (377 Ohm) free space impedance. This is shown in Henry Ott's book on EMI...

I would like to ask you for help on measuring rf field strength. Is there an accurate way to measure the rf field where the location is inside of one wavelength? I would like to measure frequencies that are in the hf amateur radio bands starting at 1.7 mHz and going up to 30 mHz. Do I want to measure the e-field or the h-field? I think that the e-field would be easier to measure. The equipment I have is a Siglent spectrum analyzer which I believe to be accurate and I have an older field strength meter, EFS-1, which works but I am not sure about the calibration. I read a paper from Keysight Technologies which describes how to use a spectrum analyzer to measure the e-field. (859xE: How Do You Measure Electric Field Strength with an Antenna and Spectrum Analyzer?) I'm not sure about what they call the antenna factor which gives volts/meter in terms of dB's. I checked into buying an accurate rf field strength meter that can measure lower hf frequencies. I found them to be very expensive. What is driving this project, is the FCC requirement to measure rf exposure around the amateur radio station. The ARRL has an online rf exposure calculator. I have several unknown factors at my station and I would like to be more accurate. I also want to learn more about rf fields. Thank you.

How do you power the antenna? How do you recieve the power in the receiver?

Any possibility to explain its mathematical derivations

Second part pls

8:20 No, an electric field can indeed exist without an magnetic field, and vice versa. The time term in Maxwells 3. and 4. equations just tells you than when one field is changed over time, the other is induced.

What intrigues me is how do electric field flows in an open circuit. It shoudn't a close circuit to electric field to flow?

“Assuming *your* earth is spherical” Hahahaha! Nice burn.

Outstanding info. When future Derek had the Sabbath shirt on, he was awesome! Just sayin...

at 8 min it almost started then back to chatting with friend about arithmetic and a bit of math

The simple reason why antennae produce rf is that the driving signal is accelerating electrons in the aerial conducting material. accelerating electrons radiate electromagnetic radiation.

9:25 "Sterling Explains". Hahahaha. yeah. Sterling doesn't know, but it took him a long time to fail to say it.

Thank for your video, but vital info seems to be missing. As in most rf videos. Still a good video though

J is not displacement current, mu0 de/dt is. Also an E field can exist without a B field, just not a solenoidal one.

Integral? I do enjoy a good calculus pun. e to the x was at a party for math functions and tried to integrate. It didn't make any difference.

At about 02:02 in this video: *_"Ah, nuts...."_* 🤭🤭🤭

Halfway decent

Hi sir good day to you where ever you are i just want to ask a question about my ssb 710 icom why does the power supply flactuate whenever it transmit? Even other devices turn off suddenly whenever i talk.

U cut it there?!

School never end? We thought we've left school, but no!

why do you look like Tony stark ??

In vacuum 😂

Thank you for the video .. but well, sorry Sterling but the black magic is still black magic :( ... the key thing to start with for the journey of understanding this magic is: "Kinks" .. but guess what, although I've went through the journey of "digesting" what really happens for the em wave to propagate, I'm unluckily still not satisfied :( ...

please speak slowly. because your videos are watch by people around world, not only english speaking people. please reduce your speech speed by 30 percent. Please

Typical, bait you in then here’s the subscription fee.

where do you guys make your money? you barely get any UKposts views, you don't sell anything, there's not that much activity on your forum, ... is this just for you people to add to your resumes? i mean, great production values, but i'm just wondering what's in it for you, and why, despite seemingly working hard on this, why you're not working on getting more reach? ... Element 14 just seems kinda weird to me...

Don't split videos up into parts.