As a telecommunications engineer, is such a joy to watch your videos, you teach some very complex topics with such a simple explanation, I wish I knew you during my college time. Thank you for your videos.

@AndreasSpiess

3 жыл бұрын

Thank you! I read the comment about the college times not for the first time ;-)

Brilliant video I am a retired science teacher and have been a ham more than 50 years. I just bought my first VNA. You clearly explain the device and its calibration and use. A lot easier to follow than most explanations I have read.

@AndreasSpiess

2 жыл бұрын

Thank you. If you are a HAM maybe my second channel is interesting for you (kzread.info/dron/QwyP4Yd0-O49e05kMUJgQQ.html )?

Well done. I am an engineer, but my speciality was RF. I was an RF engineer and still have HP and a Anritsu Network analyzers. Unfortunately i suffer pretty bad from MS now and i am disabled, but RF was my favorite thing. You did a very goid job explaining the basics on VNA’s. Bravo. I enjoy your channel very much. My friend, mentor and hero in the RF and antenna world passed away this year. His name was Richard (Dick) Austin. He was well known in the US for his ham radio antennas. He also made antennas for lockhead martin, GE, Boeing and more. He was building antennae until his death this Feb at age 85. He taught me so much. He is missed. You made me think about him. Thank you. Bob S.

@AndreasSpiess

3 жыл бұрын

Thank you for your compliment. It means a lot to me if I read such things from professionals. RF these days is no more so "sexy" as it was in earlier days. This is the reason I made this and other videos about antennas and also SDR receivers. Young people at least should know the basics. And I am not sure if RF is in the curriculum of a typical EE degree anymore. You were lucky to have such a teacher!

Great video, thank you! Sometimes dudes with >$50k VNAs cannot cover the basics at the level of clarity you did. Great explanation on the Smith Chart. While the magnitude of S11 can tell you that things went wrong, the impedance tells you the exact direction of where they go wrong.

@AndreasSpiess

3 жыл бұрын

Often experts are not the best teachers ;-)

@rajeshvagadia-vu2exp830

Жыл бұрын

@@AndreasSpiess exactly

Nice job! And thank you for the recommendation for my channel.

@AndreasSpiess

3 жыл бұрын

You are welcome. I am a longtime subscriber of your channel and do not miss one video.

@w2aew

3 жыл бұрын

@@AndreasSpiess Thank you Andreas - that means a lot to me, coming from you. I hope my channel is as popular as yours someday! (you have twice as many subscribers!).

@bourasabdennour8369

3 жыл бұрын

You guys are both awesome..you are contributing with great content for the community. Wishing you good health and happiness 😊

@TheMadMagician87

3 жыл бұрын

Your channel is excellent w2aew, I hope your subscriber base grows, it deserves to given the quality of the information you produce! The guy with the Swiss accent also has some great stuff :-)

@mschwage

3 жыл бұрын

You guys are both so good at explaining electronics.

An excellent and logical presentation as always, making a complex subject clear and understandable. Thank you.

@AndreasSpiess

3 жыл бұрын

Glad you liked it! Thank you.

I've worked with frequencies up to many GHz for many years and have used but never fully understood Smith charts. Thanks to you, I now do. Your method of explaining a very complex subject in very simple terms is most entertaining. WELL DONE.

@AndreasSpiess

Жыл бұрын

Thank you very much for your kind words! They mean a lot to me because you know the topic.

A wonderful explanation of the Smith chart I never have seen before! Thank you again for this splendid lecture.

@AndreasSpiess

3 жыл бұрын

Thank you for your nice words!

Very well explained and simple. I love the way you organize "The Lecture". Good teacher! Keep on doing these videos

@AndreasSpiess

3 жыл бұрын

Thank you! Glad you like it.

That was surprisingly helpful. I didn't even know what vector network analyzers where used for before!

@AndreasSpiess

3 жыл бұрын

Glad you know it now! Everything seems to go wireless, but sometimes basic knowledge is not there. RF basics are also not taught at universities anymore. At least for the general EEs

I shared your video with my fellow classmates. I have gone through a electromagnetics course with RF focus, yet your video simplified it for me that much more! Thank you for this amazing piece!

@AndreasSpiess

3 жыл бұрын

Glad it was helpful!

So much knowledge in your head! I learn so much, I must see your videos several times to get it! Thank you again Andreas!

@AndreasSpiess

3 жыл бұрын

You are right, this is not simple stuff!

Thank you for this video, I am a new ham and am trying to build antennas. I purchased a NanoVNA thinking it would be easy to use and help with building antennas. I was ignorant and built them poorly. I tried to read up on the NanoVNA as well as Smith Charts and ended up confusing myself greatly. Thanks to your video I now understand how to use my equipment properly and read a Smith Chart. I can't thank you enough.

@AndreasSpiess

3 жыл бұрын

Antennas never are easy ;-)

Reminds me of when I was in Uni, using old VNA's to tune open-air harmonic transformer coils. This video could be an introduction to the other parameters one uses in electrical engineering (y, h, z, g...). Maybe even explore the stability of such systems, quite advanced stuff though, not sure everyone knows about control theory. As always another great video.

@AndreasSpiess

3 жыл бұрын

This is probably how far I will get on this channel... But I thought it is needed. Many nanoVNA video creators do not cover the basics.

Not only an excellent easily digested appraisal of these VNA's, but also a great intro to the Smiths Chart by bringing it to life - THANK YOU so much! :)

@AndreasSpiess

Жыл бұрын

Glad you liked it!

Wow! Thanks for this Andreas! This is stuff I've desperately wanted to understand for years!

@AndreasSpiess

3 жыл бұрын

Glad it was helpful!

fantastic , just bought one , now I shall use it with confidence . Thank you for another great video.

@AndreasSpiess

3 жыл бұрын

I hope you will enjoy it!

Thank you Andreas for this very helpful video! Now I understand the smith-diagram and ordered the hf-demo-kit test board. Very good explanation and easy to understand!

@AndreasSpiess

3 жыл бұрын

That was the goal. Glad it worked out! Thank you for the feedback.

Excellent work, thank you very much for your time in making this video!

@AndreasSpiess

3 жыл бұрын

Glad you enjoyed it!

What a marvelous & concise demo & tutorial. Your presentation of moving the cursor by changing the input really helps many people visualize what, exactly, is happening. Excellent video Sir, & a tip of my hat to you !

@AndreasSpiess

3 жыл бұрын

Glad it was helpful!

I've never watched a better video of this type. I enjoyed every second of it. If I had teachers like you during my schooling days, I would've been a straight A student.

@AndreasSpiess

2 жыл бұрын

Thank you for your nice words!

It's the first time, I have seen the an simple and graphic explanation of the relation between Smith Chart - SWR and what the VNA does. Thank you very much!!

@AndreasSpiess

3 жыл бұрын

Glad it was helpful!

As usual from you excellent explantions and demos of what you do. I learnt some info that I should have known but didnt. Thanks again

@AndreasSpiess

3 жыл бұрын

You are probably not the only. It was the same with me. This was the reason for this video.

One of the best tutorials. Thank you. Good to watch this before using the device for the first time.

@AndreasSpiess

3 жыл бұрын

Glad it helped

I have watched this video a few times and found it to be a very useful reference work. Especially if you, like me, come from a non technical background and are learning in your later years. I understand the principles now and feel I can use my basic, original type nano VNA properly. Thanks for taking the time to make this video.

@AndreasSpiess

2 жыл бұрын

Glad it was helpful! And thank you for your feedback.

As an ‘old ham’ who only ever used SWR meters to check out an aerial, This video is simply amazing as to just what the Nano can do, always thought this sort of equipment was out of my price range, I’m blown away, Thank you so much for such a well presented and very informative video. Take care, 😃👍

@AndreasSpiess

2 жыл бұрын

These instruments were out of range for me, too. This is why I love to live now. We can afford a lot of good stuff and have fun with it :-) It is really astonishing.

Thank you for this video. I just bought a NanoVNA and so found your video very instructive, especially the points you make about proper calibration.

@AndreasSpiess

3 жыл бұрын

Glad it was helpful!

Thank you so much for the explanation. The breaking up of the topic and the sequence of explanation was fantastic. You also anticipated FAQ questions and answered them pre-emptively. Thank you again on all the efforts. I subscribed :)

@AndreasSpiess

3 жыл бұрын

Welcome aboard the channel!

I am back watching this video again. I like the flow of this and the balance of theory and practical. Thanks for your video! I am amazed that I can even have a network analyzer for home use. The ones we used to use at work were thousands of dollars.

@AndreasSpiess

2 жыл бұрын

Indeed, we live in an excellent time with all this cheap electronics. The nanoVNA is one of the best things I ever owned!

One of your best videos-clear and informative.

@AndreasSpiess

3 жыл бұрын

Thank you!

Thank you very much for this! I have been looking forward to see how NanoVNA V2 behaves.

@AndreasSpiess

3 жыл бұрын

You are welcome!

Superb explanation of VNA and Smith chart use. Many thanks Andreas!

@AndreasSpiess

3 жыл бұрын

You are welcome!

Great explanation of the Smith chart, the first time I saw one I was intimidated for sure.

@AndreasSpiess

3 жыл бұрын

Glad you enjoyed it!

Yes - I agree with your caption "Mandatory for Makers"! Thanks for a very informative video. 73s

@AndreasSpiess

3 жыл бұрын

You are welcome! 73 de HB9BLA

Thank you very much Andreas for making such that amazing videos. Everything is well covered and simple explanation. Thank you!

@AndreasSpiess

3 жыл бұрын

You're welcome!

Very good and easy explanation ! Gives me an easy review of my studies in the past. Thank you !

@AndreasSpiess

3 жыл бұрын

Glad it was helpful!

Thank you Andreas this information was extremely valuable and wonderfully put. You give the basic information that is required to understand the units. I have not found anything else like this!!👀⭐️⭐️⭐️

@AndreasSpiess

2 жыл бұрын

Glad it was helpful! I hope you enjoy your nanoVNA...

This was an outstanding video. Understandable and informational. Better than several others that put me to sleep, or confused the snot out of me.

@AndreasSpiess

Жыл бұрын

Glad the video was helpful!

Spectacular video!!! I understand smith charts much better now. Also, I now know what the second channel on my Nano-VMA is for. Thank you for all your works!!!

@AndreasSpiess

2 ай бұрын

Glad it was helpful!

One of the best videos I've seen on what a VNA is and how to use it.

@AndreasSpiess

3 жыл бұрын

Thank you!

Thank you for the short and precise Smith chart explanation - I think I'll finally remember inductance is up and capacitance is down :)

@AndreasSpiess

3 жыл бұрын

At least something ;-)

Excellent presentation! I just got my nanoVNA today and had never seen a Smith Chart. Now I have an understanding of how to use them. Thanks!

@AndreasSpiess

9 ай бұрын

Glad it was helpful!

EXCELLENT introduction to the nano VNA, & one of the best & simplest explanations I've seen on the use of a Smith chart. Thank you, Andreas! I'll be ordering a nano VNA shortly. ;)

@AndreasSpiess

2 жыл бұрын

You will have a lot of fun with it, I am sure!

Very good concise explanation. A great help as I've just purchased a NanoVNA-F. Thanks

@AndreasSpiess

3 жыл бұрын

I hope you will have fun with it!

Andreas thank you very much mate, I found that video extremely educational and helpful!

@AndreasSpiess

3 жыл бұрын

Glad it was helpful!

I love this Video! It helps me to use my new device! Thank you!

@AndreasSpiess

3 жыл бұрын

You're welcome!

Thanks for the inspiring video which will motivate many viewers to measure more in this "magic RF" field.

@AndreasSpiess

3 жыл бұрын

You are welcome. I thought, many Makers use such devices, but sometimes do not know how to use them. It is a little more complex than just a DVM...

This is THE place to find out about all VNAs, not just the NANO. Well done and thank you.

@AndreasSpiess

3 жыл бұрын

Thank you. The "NanoVNA" is to help google find it ;-)

@michael2782

3 жыл бұрын

@@AndreasSpiess That's how I found it. I have a AIM 4170D single port to (10 KHz to 180MHz and bought the NANO V2-F to extend the range and get a 2 port device. What I found is that there is a fairly good comparison but, as expected, the AIM unit is accurate enough to actually help tune "things" (like tweaking a filter or an antenna) while the NANO not so much. The AIM information matched several other test instruments while the NANO frequency measurement was off by several KHz (in 3-30MHz range) even though calibrated for as narrow as possible. Still a useful quick see tool for the cost. If you would like to see data get me your email and I'll send Excel and Graphical data.

Great tutorial, thank you, perfect timing as I purchased a vna last week.

@AndreasSpiess

2 жыл бұрын

Enjoy this little device!

I’ll join the chorus in saying this is an amazingly good VNA explanation and demonstration.

@AndreasSpiess

3 жыл бұрын

Thank you!

I ran across this while watching Alan's (W2AEW) videos and found it very worth my time to watch it. I believe I may watch it a second and third time...Thank You!

@AndreasSpiess

2 жыл бұрын

Alan is a source of a lot of good stuff. I watched all his videos ;-)

Perfect explanation! Finaly I understold the Smith Chart. Thanks!

@AndreasSpiess

2 жыл бұрын

You are welcome!

Andreas, Thank-you so much for your lucid explanations anchored in reality. And thanks for introducing me to the VNA. Best.

@AndreasSpiess

Жыл бұрын

Glad you liked the content!

This video is truly excellent! I've seen other videos that provide incomplete and/or altogether incorrect information on the NanoVNAs.

@AndreasSpiess

3 жыл бұрын

Thank you! Maybe that fact was the reason for this video ;-)

Although I bought a NanoVNA-F, the theoretical info in your video is of great value. Thank you so much

@AndreasSpiess

3 жыл бұрын

Glad it was helpful!

Tuning out the reactance in real time on a Smith Chart was so cool! I would almost buy one for that... What I would have given for one of those 40 years ago. But the Bird 43 directional wattmeter was great at its job

@AndreasSpiess

3 жыл бұрын

Those Bird Wattmeters still are great for their purpose! But I already said it many times: We live in a wonderful (electronics) time!

And again another great video. Finally I got some missing answers. Thanks a lot.

@AndreasSpiess

3 жыл бұрын

That is the goal of the video. Glad it worked!

A Really, really, really good overview of ALL pertinent considerations when using a (digital) VNA. Yes, I started my career using an analogue one!

@AndreasSpiess

3 жыл бұрын

Thank you for your compliment! It values more because you seem to know what you are talking about :-)

Das ist eins der besten, verständlichsten Erklärung zum/des NanoVNA die man hier finden kann. Zum allerersten mal verstehe ich was eigentlich gemeint ist. Leider habe ich dein Video erst jetzt entdeckt; möchte mich aber trotzdem sehr für deine verständlichen Erklärungen bedanken..! 👍 🙏 🤝 VG, Holger

@AndreasSpiess

7 ай бұрын

Vielen Dank für die netten Worte!

Wonderful explanation. Thanks!! Cheers✨✨

@AndreasSpiess

3 жыл бұрын

You are welcome!

This is really well done. I am not an electrical engineer, not even close, but you clearly lay out what this device can do and how to do it so even a layman like me can leverage the tool. Many thanks!

@AndreasSpiess

3 жыл бұрын

You are welcome! Enjoy your tool.

Congratulations Andreas! You make easy to understand all with your videos! You are from this planet? MANY thanks! 73

@AndreasSpiess

3 жыл бұрын

Yes I am ;-) And Thank you!

Well, I definitely learned a lot from this video. Thanks

@AndreasSpiess

3 жыл бұрын

Glad it was useful!

Most understandable video regarding the Smith Chart. Many thanks :)

@AndreasSpiess

3 жыл бұрын

You are welcome!

Endlich hab ich das Smithchart verstanden. Sehr schöne Erklärung. Ich werde jetzt öfter meinen vna kalibrieren. Ich glaube man kann auch Resonatoren mit dem nanovna messen. Ich dachte ich hätte einen Saw Filter aber es war ein saw resonator, da er im nanovna keine Dämpfungskurve anzeigte, sondern nur eine gerade, aber der swr war nur am der resonatorfrequenz perfekt und im restlichen Bereich sehr schlecht, was ja auch hilft andere Frequenzen zu blocken.

@AndreasSpiess

3 жыл бұрын

Filter haben am Eingang normalerweise ein schlechtes SWR für Frequenzen die sie sperren. Wichtig ist ja der Output... Allan hat ein Video gemacht wo er Quarze ausmisst.

Thank you Andreas for this excellent video. You present topics in a clear and concise manner that make it easy to understand. We need a Kahn Academy for ham radio. Andreas Academy!

@AndreasSpiess

3 жыл бұрын

For me, KZread is like an academy with excellent teachers. Maybe not easy to find sometimes...

Thank you SIR! Very helpful for somebody new in RF scene.

@AndreasSpiess

2 жыл бұрын

You are welcome!

Thank you for no midroll ads on a 25min video! YT must hate you for that :D

@AndreasSpiess

3 жыл бұрын

I do not know. But I make my videos for my viewers ;-)

Wow. I wish all explanations of the Smith chart were that clear. Thanks!!

@AndreasSpiess

3 жыл бұрын

Glad you liked it. Thank you!

What an awesome video. So straight forward and explained so well. Thank you.

@AndreasSpiess

Жыл бұрын

Glad you liked it!

Thank you! I now have a much better understanding of my VNA.

@AndreasSpiess

3 жыл бұрын

Happy to help!

Excellent! Thank you for explain these concepts so clearly!

@AndreasSpiess

2 жыл бұрын

You're very welcome!

I know from the introduction that this will be an excellent lesson.👍

@AndreasSpiess

3 жыл бұрын

I hope so ;-)

Great video, I love it! I'm teaching the working principles of a VNA to EE students at the university, and since COVID prevents offline courses, I'm using the NanoVNA with NanoVNA Saver to demonstrate the matching process of an antenna and the basic functionality of the device. Although your measurement with the Nagoya antenna shows that the SWR is over 2, your measurement is not carried out properly if we consider that it shall be used with a handheld radio. The radio's body plays a significant role in the radiation characteristics, so the proper measurement would be done in an anechoic chamber with the antenna attached to the radio. Not everyone has such a chamber at their workplace, so what you can do it the Amateur way: Take the radio and and an antenna with known gain reference antenna attached to a spectrum analyzer and go out on the field with a known distance between the 2 devices. You know the output power of the radio(or measure it), subtract the path loss and the receiver gain from it and then you have the 0dB gain reference level on the spectrum analyzer. With that knowledge you can calculate the radiated power, which is the REAL information that we need. I hope this idea helps someone in the future. :)

@AndreasSpiess

3 жыл бұрын

You are right. I even did a video on how to test antennas in the real world, without an anechoic chamber. But this was not the point in this video. I just wanted to show the match. If everything is rejected, also a high gain will not help ;-)

Great explanation of why we need to calibrate when the frequencies change. I'm preparing a test equipment presentation for an amateur radio club and this helps as I am not that familiar with VNAs.

@AndreasSpiess

3 жыл бұрын

VNAs are Perfect for HAMs and it is good if you educate them.

Video covered EVERY THING! Great Video and easy to understand tutorial.

@AndreasSpiess

2 жыл бұрын

Glad you enjoyed it!

A superb video for VNA newcommers to understand what it is all about

@AndreasSpiess

3 жыл бұрын

Thank you. And thank you for your help producing it!

Excellent tutorial. Complex made simple. Thank you!

@AndreasSpiess

5 ай бұрын

Glad you liked it!

I love my VNA --- electronic hobbiest and Ham radio operator. I made my first two UHF yagis, designed, and tuned them in an unorthodox manner - pure experimental.

@AndreasSpiess

3 жыл бұрын

It became much easier to build such projects. Less guesswork...

Very educational. Well articulated. Thank you sir!

@AndreasSpiess

2 жыл бұрын

Glad you enjoyed it!

Congratulations for this learning, I just have a shadow area it's the Return Loss and Decibels, thank you again!

@AndreasSpiess

3 жыл бұрын

You are welcome!

I did this talk at our local HAM club (OCARS), but not nearly as well. Well done. Next time I just show your video hi-hi.

@AndreasSpiess

2 жыл бұрын

A presentation always is better than just a video. So: Well done!

This video is an excellent introduction before one goes to W2AEW excellent series. Thanks Andreas.

@AndreasSpiess

3 жыл бұрын

Definitively the right sequence ;-)

Nice refresher course - thank you

@AndreasSpiess

3 жыл бұрын

You are welcome!

Wonderful explanation. I feel like I need you on retainer to explain stuff to me. I do not work with any radio signals. I use scopes as an industrial emergency power tech and watch a ton of scope related content . I think this is why the device popped in my feed and sparked my curiosity. Having OCD with needing to understand stuff I found your video after watching about 20 with no help. The demonstration of inductance and capacitance "resonated " with me because I deal with power actor issues from motor loads and VFD drives. I also have to use power factor correction on datacenters . The swift chart is pretty cool. I only understand it now thanks to you!

@AndreasSpiess

Жыл бұрын

Glad the video was helpful to extend your knowledge a bit. It is always good to know a bit more than the minimum ;-)

The best video on the subject I have seen. Many thanks.

@AndreasSpiess

3 жыл бұрын

You are welcome!

It seems much more simple after your video. I thank you

@AndreasSpiess

3 жыл бұрын

Glad to hear that!

Wonderful explanation. Learnt a lot of things. Thank you 👍

@AndreasSpiess

3 жыл бұрын

Glad it was helpful!

Excellent video! So much practical information provided. Thank you! Btw. just got myself a LibreVNA, will have some fun after I grasp fundamentals like the ones you talked about.

@AndreasSpiess

2 ай бұрын

I am sure you will like your VNA!

Extremely interesting video, I learned a lot, thank you! I will use my NanoVNA more efficiently :-) I also use it for measuring cable loss by connecting them between 1.1 and 2.1.

@AndreasSpiess

3 жыл бұрын

Glad it was helpful!

Thank you, this video really explains a lot of the mystery.

@AndreasSpiess

3 жыл бұрын

Glad it was helpful!

We had a lengthy discussion on our ham radio net last night about nano VNA's, i asserted exactly what you said, but not in the great detail you did. This video explains it very well and accuratly, so I will pass it on to them. Your presentation was excellent, and I had to play with mine while watching, the RF demo board is also a MUST HAVE for learning the VNA, their great for measuring crystals, traps, lots. thanks, Barry VK2FP/AG7VC

@AndreasSpiess

Жыл бұрын

Glad my video helped for your argumentation ;-)

Once again Great Video Andreas!

@AndreasSpiess

3 жыл бұрын

Glad you enjoyed it!

I have a MiniVNA and i'm quite happy with it. Helped me to optimize some PCB designs in the past. Did not know about that RF-Demo PCB tho, that is definately something i need to get for a better calibration option on the u.FL connector side of my adapter cables.

@AndreasSpiess

3 жыл бұрын

I have no idea how good the calibrations are on the PCB. But at least it helped to show the traces as drawn on the Demo PCB...

Hello Andreas! This was exceptionally useful!! Thank you!!! Randy

@AndreasSpiess

3 жыл бұрын

Glad it was helpful!

Excellant, I learnt a lot though I have used one for a year. Thank You

@AndreasSpiess

3 жыл бұрын

Glad it was helpful!

Thanks so much for a nice and clear tutorial.

@AndreasSpiess

Жыл бұрын

You are welcome!

Thx Andreas, this is a must have for me for making some Lora-Antenna!

@AndreasSpiess

3 жыл бұрын

Maybe you also watch my "Antenna video"...

Excellent detailed explanation .. Thank You for sharing

@AndreasSpiess

3 жыл бұрын

You are welcome!

Excellent way of teaching.

@AndreasSpiess

2 жыл бұрын

Thank you!