Thank you so very much! You're that patient teacher I always wished I had when I was a kid with a hunger for learning such things. Now decades later I've finally found my teacher and I feel like I'm re-igniting some long forgotten fascination with this world of things---forgotten and left behind in frustration.

As always, Dave has a way of explaining the complex to a guy like me so that I can understand. Thanks, Dave! I'm taking on the Extra exam and using the ARRL study guide as my text. But, I always come running to this channel to get the classroom version which makes it all clearer.

Dave, you do an amazing job explaining all this stuff. Spent many hours listening to you. THANK YOU.

I sure do wish I had these videos when I studied for my licenses! What a great refresher!

I really appreciate the way the topic is presented and superbly explained.. Thanks a lot Mr. Casler.!

@davecasler

8 жыл бұрын

+SRINIVAS MALLAREDDYPETA You're welcome!

Thanks for having both thorough knowledge, and rock-solid presentation skills. You rock!

Thank you from the bottom of my heart for this video. You made the pages in my manual come to life!

I have a bachelors degree in EE and this is incredibly helpful. This sort of teaching is absent in formal education these days. Thank you.

@davecasler

7 жыл бұрын

Thank you

@francismcclaughry3794

3 жыл бұрын

I'm glad he is out here two. I have a general ticket and have played around with antenna since i was a kid. but i did not think that I could kill some one because of not thinking. and that I wanted my antenna to work from east to west. and dave used several big words that the meaning did not compute in my mind. Yes there is a lot that is not taught.

@maniac50ae14

2 жыл бұрын

How do they teach this then? I didnt go to school so id have assumed this is how its taught

Thank you Dave, great explanation. So much beneficial for me to understand the topic.

Good afternoon Professor Casler! I am studying about antennas and radar by myself applied to remote sensing. Yours teaching and explations are so clear and high quality! Congratulatiobs!👏🏾👏🏾👏🏾👏🏾 "The man is eternal when your job is continuous! God bless you and have a Merry Christmans, for you and your Family! Jacareí- São Paulo-Brasil.

Very informative. And it is so rare to hear someone so articulate. Thanks! 73 from India. This is VU3BQY.

Thank you sir, I wish I had courses thought by people like you.

Superb David, I taught the RAE here in the UK using many of the tips of explanation found in your video series. 73 de John Allsopp G4YDM Washington,(Ancestral Home George Washington) North East England. Stay safe and well in the U.S.A.

David - I have thoroughly enjoyed your instructional videos in preparation for my advancement to Extra Class license. 73's

I would like to design my own antenna for a Radar receiver!. Outstanding Lecture!!! My first introduction to Antenna Design. I started reading a textbook on Antenna. This video is superb and really summarized with all details. Thank you, sir!

Thank you sir. This is the best explanation of antenna patterns I have ever watched. Very intuitive description , superb presentation and indeed accurate.

Great review, Dave, even after playing with wire in the air and antenna building for the past 5 years.

Studying for my Extra, thank goodness for your channel! Thank You!

Brilliant! You're an excellent teacher, thanks!

I subscribed after watching one video. You're up there with w2aew when it comes to explaining this sort of stuff. It's also so much that I can't learn it all from watching a single video a single time.

OMG I love this guy!!! I wish I would have had him as a teacher when I was in school, I'd probably be an engineer rather than an electrician!!!!!! SUBSCRIBED

@user-yi2kp6bw8i

3 жыл бұрын

})​FÚ

@peglegpete6656

3 жыл бұрын

Never to late.

Great video, thanks for putting it together. I look forward to checking out more of your videos

Best ever explanation of antena. Thank yo, you are great, talented teacher.

You sir are one fine teacher. Thanks for the video.

@johnpierre1898

6 жыл бұрын

If I put a vertical on top of a steel shop building, will it need radials?

My old TV's antenna is a piece of electric wire hanging from it... It may not be the best, but man this things are easy to make... Great video by the way! Very informative.

Most useful and understandable Antenna explanation I have heard. Thank you sir, remain blessed.

David, U R STILL THE ONE !!! Thank you so much for your lessons ! Alex

@davecasler

9 жыл бұрын

ki6eeo You're welcome!

Mr. David, thanks to you i know more about RF

Excellent presentation! Very very well done! Bravo to you!

Wow, this is a very good explanation. Thanks, Dave!

There are myriad ways to screw up the use of "myriad"....kudos to you, David, for knowing how to use the word correctly. Oh, and BTW, just an exceptional video on a very difficult (for me) topic. Thanks!

This is by far the best explanation of antennas I have ever come across. I've learned more from this video than in countless hours of browsing the web. Thank you!! May I suggest adding the topics covered to the video description to help others find this amazing video?

@davecasler

9 жыл бұрын

Mark, thanks for the suggestion. I've updated the video description. 73, Dave

Excellent contents and a gentleman as a presenter. There is many hours of preparation for such a video. The priority points are mentioned and his experience does admit that practical performances are not always as theory stated, His best statement concluded from his experience is ," Everything can affect the performance of the antenna." My congratulations on your presentation and experience.

@davecasler

9 жыл бұрын

Carmel Pule' Thank you

Thank you very much for these videos. I know it took a LOT of time and energy to produce. This video helped me understand antenna gain better. 73 KK4VYS

Excellent instruction. Thanks.

Thanks a lot for making and posting these lessons. I've just got my ham radio licence back and there's a lot I have to remember before I resume operations. I still have to decide which antenna suits me better. At first, I thought of an inverted v dipole, than I thought about a long wire. But since, I like dxing a lot, I may want to build a delta loop antenna. 73 from PY5WHO/PY5136SWL

You are an excellent teacher. Very clear explanations of hard to grasp concepts.

@davecasler

9 жыл бұрын

Tyler Snowden Thank you!

GREAT Video ! Thank you! Better than a paid-for University Class...

Thank you Sir! You just made me a better engineer :)

Sir you're good!! Thanks for your contributions, this is S21TB, 73

@davecasler

8 жыл бұрын

+Ahmad Sayem You're welcome!

Great, I found your amateur extra videos and your general videos.

@davecasler

2 жыл бұрын

Good luck with your studies!

Thanks for this amazing video.

Improve your antenna before investing in an amplifier = WRONG!! The correct way is to invest in whichever one presents the sweet deal first. Get the other one later. Great video btw!! I learned a lot from this one!

@glowingone1774

5 жыл бұрын

Better antenna is almost always a good upgrade.

Thank you, these are very helpful.

Great presentation. Thank you for your time.

fantastic video. Thank you for sharing a lot of beneficial information

exactly the video i needed! thanks Sir!

Great information. Getting close to my extra. Thank you

you're awesome i'll start watching your videos from the begining keep it on going plus i subscribed (;

Wow Dave . Looking good!

You are a rock star teacher!

Love your videos and how you present the material. I always learn something new. However, you've probably never been to Western Nebraska as it is NOT flat. Once you get past North Platte, you're rising in elevation and the hills become more apparent.

Well done Dave.

Some people think that you should use a certain length of coax between your radio and swr meter when adjusting your antenna. What are your thoughts? Thank you. Larry

Very informative, thank you. Now on to the not obsolete video, haha.

Thanks. Good post. I'm an antenna fanatic.

What is the best type of antenna to use if i want the main lobe to be a cone with maximum gain around the axis in the centre? I want a drone to to follow the maximum signal strength, in other words, the drone should always be going towards the central axis in the middle of the main lobe.

Might be "obsolete" as far as the current HAM radio exam. Certainly NOT obsolete in regards to real life learning. Outstanding presentation. Wish I knew which "book" he's refrencing.

@Tannerys

Жыл бұрын

He's referencing the ARRL Extra Class License book, this may be a little out of date but ~95% of the content hasn't changed much in the last 10 years.

What is the relationship between receiving antenna configuration and transmitting antenna configuration for shortwave radio frequencies? My impression is that reception is less precise than transmission, and the most important characteristic is height. I want to try a weather ballon just under 500 ft with a 1/2 or 1/4 wave antenna out of a rigid material in a horizontal mode. Compass heading may have to be magnetic, ie, north- south. I’m a ME by education and practice. Be kind.

Extremely good!

thanks David very clear...

Deep. Well done. Better than 5 yr degree programme.

my god I almost understood I checked a few words and it's coming clearer thanks from don the welder

Sir , ve made it better to understand and develope .thanks for the video

Which is the best antenna to transmit and receive 915mhz frequency ?

Thank you for the excellent video OM! 73 de AC6GM!

complex topic but well explained, i feel video needs to be watched multiple times to get better understanding....

What do the new satellites looking at the edges of the universe use for a radiation pattern. It must be extremely focused because signal strengths are not in the megs watts.

Now I understand why there seems to be so much experimentation with antennas. I have LOS from my mailbox 600 yards to my workplace through a closed window. Being a run down rural road. I'm going to build a disk Yagi and mount it inside a newspaper tube aimed down the street. :)

thank you, very good video!

Do you have a video where you explain this in terms of Earth specifically?

Thank you for the video!

Thanks Dave & 73 - great lecture.. VA3PDG

Dave thank you , I passed my Extra yesterday de KJ6CQC /AE

@davecasler

9 жыл бұрын

Dean McCollom Congratulations on your upgrade!

Hey there Dave! Thanks for you & all the other You Tube University professors. My extra class status posted to the FCC data base, last week, or the week before. I managed to sail through the Technician & General, mainly from repairing AF & RF stuff for the past, uhhhhhhmm, erm, eh, carry the, and add the, uhm, wow. Let's just not go there. Anyway, thanks for explaining why a dipole does what it does & how the test got their figures. My QTH in between two AM stations, that tend to wreak havoc with everything. Antenna types I was never bothered by, were/are one of my weak areas. I am up in Colorado now, again and will be headed out your way soon. Who knows? Maybe? I generally drive & I don't even like even using a cell phone, while doing so. 73 KI7AQJ

@davecasler

8 жыл бұрын

+Seth B Congratulations on your upgrade!

cool stuff...really been helpful....thumbs up

May I ask for your assistance with apartment for antenna installation simple type antenna ?

I do have a question: what is the inportance of: R, R2, C, C2, Z, and Z2 in a broadcast fm antenna, most of the Engeeniring look for SWR, and dont care about the anterior measurements (R, R2, C, C2, Z, ad Z2)

finished the whole vid mann nice

phenomenal lecture

Very clear explanations.

Started a diy double cross antenna build for receiving satellite images and somehow ended up here in the weeds 😂

Thanx !!! great great help

Great job !!!!!!

can you make a Yagi spinning antenna and get benefit of isometric antenna ??

would you mind explaining the fundamentals of patch antennas

Thanks Dave!

A flash light reflector be made of plastic can act as a reflector for my antenna how to make it

what should be the radiation pattern of multiband antenna

It's very helpful .thanks sir

Fantastic video thank you

Video link for updated version is "private" and thus not accessible. Thanks Walt KT0D

Why does the Signal Strenght indicator show the Signal is Stronger the futher away it is from the dipole antenna's element (radiator). It's my understanding that an RF/Electromagnetic Wave falls in strenght based on the Inverse Square Law: The Strength of the EM field is Inversely Proportional to the Distance Squared from the Radiating Antenna.

This story might help some people understand radiation resistance: Back about the turn of the twentieth century a young patent clerk was trying to understand why antennas generated far fields. Applying Maxwell's Equations generated a near field, but no far field. After pondering the problem, he discarded everything everyone knew about physics and invented Special Relativity to solve the problem. It turns out that accelerating charges changes their inertial reference frame and causes them to emit photons. One way of understanding antennas is to see them as guides to accelerating electrons so the photons they emit go in the directions you want. But rather than teach every HAM radio guy Special Relativity, they started teaching "Radiation Resistance" instead. That worked for a long time, and Electrical Engineers forgot the physics behind their craft. But it's a nice tidbit to know, even if it's not that practical.

If the radiation pattern can be reduced, is it assumed that the antenna has more range? The power is concentrated over a smaller volume cross section therefore the pattern should be elongated?

Degrees of Assemoth; sounds like some fantasy game or folklore...lol ...but how would you know what agnle or direction the em wave is moving in, in terms of maxwells law of thre evectors electric field, magnetic field and motion.

Hi, can you do a video on ceiling mounted, omni-drecional dome antennas, used with repeater amplifiers in the mobile cell phone frequencies (1800Mhz )? - How they work & construction.

@davecasler

7 жыл бұрын

Steve, I haven't worked with any of these. I see several advertised on the web, all for cell phone applications. Perhaps another viewer will have more information. 73, Dave

Interesting. Practical facts.

Great David, thanks and good dx 'de IW2OBB

very clear ... thank