#359
Переглядів 310,882
День томуIs this antenna good or bad, and for which frequency is it useful? A question I am often asked. Because a lousy antenna reduces the range of a device considerably. Or another question: Did the supplier cheat on this filter? At the end of this video, you will be able to answer these questions with confidence. And you know everything you always wanted to know about how to properly use a NanoVNA and the Smith Chart.
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My HAMradio channel: / @hb9bla
Links:
LiteVNA 4" (currently best VNA): s.click.aliexpress.com/e/_A6jaWD or amzn.to/3tWffz4
2.8" SMA NanoVNA V2: s.click.aliexpress.com/e/_A6Pm3F or s.click.aliexpress.com/e/_9zdUZ9
4" Type N NanoVNA V2: s.click.aliexpress.com/e/_AaJcaR
RF Demo Kit: s.click.aliexpress.com/e/_AnJR0X
nanoVNA Kit PCB: s.click.aliexpress.com/e/_98dlH7
Forum (Lots of info, up-to-date): nanorfe.com/
VNA_QT Software: github.com/nanovna/NanoVNA-QT...
NanoVNA-Saver: github.com/NanoVNA-Saver/nano...
W2AEW Channel: / @w2aew
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@drauziooppenheimer2167 3 роки тому
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 роки тому
Thank you! I read the comment about the college times not for the first time ;-)
@Tocsin-Bang 2 роки тому
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 роки тому
Thank you. If you are a HAM maybe my second channel is interesting for you (ukposts.info/the/QwyP4Yd0-O49e05kMUJgQQ.html )?
@robertsmiczsmiczamplificat593 3 роки тому
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 роки тому
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!
@Choober65 Рік тому
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 Рік тому
Thank you very much for your kind words! They mean a lot to me because you know the topic.
@ivlis32 3 роки тому
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 роки тому
Often experts are not the best teachers ;-)
@rajeshvagadia-vu2exp830 Рік тому
@@AndreasSpiess exactly
@kevinnicholls1017 3 роки тому
An excellent and logical presentation as always, making a complex subject clear and understandable. Thank you.
@AndreasSpiess 3 роки тому
Glad you liked it! Thank you.
@shawnrobison6482 3 роки тому
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 роки тому
Antennas never are easy ;-)
@eugenecbell 7 днів тому
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 5 днів тому
Glad it was helpful!
@victorchorques4893 3 роки тому
Very well explained and simple. I love the way you organize "The Lecture". Good teacher! Keep on doing these videos
@AndreasSpiess 3 роки тому
Thank you! Glad you like it.
@brbrbrbrbrbrrb 2 роки тому
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 роки тому
Thank you for your nice words!
@clifficus 2 роки тому
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 роки тому
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.
@akwawka Рік тому
As a budding ham the concepts and terminologies have been baffling, and after wandering the corridors of antenna information stumbled into your lecture space on VNA. Your explanation of the Nano was so clearly expressed I departed with a solid understanding of the device and its application...much appreciated.
@AndreasSpiess Рік тому
Glad the content was helpful. This technology changes a lot for HAMs!
@Andreas-gh6is 3 роки тому
That was surprisingly helpful. I didn't even know what vector network analyzers where used for before!
@AndreasSpiess 3 роки тому
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
@j14sanchezh 3 роки тому
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 роки тому
Glad it was helpful!
@PeterAlbronda 3 роки тому
A wonderful explanation of the Smith chart I never have seen before! Thank you again for this splendid lecture.
@AndreasSpiess 3 роки тому
Thank you for your nice words!
@tonysfun 3 роки тому
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 роки тому
You are right, this is not simple stuff!
@w2aew 3 роки тому
Nice job! And thank you for the recommendation for my channel.
@AndreasSpiess 3 роки тому
You are welcome. I am a longtime subscriber of your channel and do not miss one video.
@w2aew 3 роки тому
@@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 роки тому
You guys are both awesome..you are contributing with great content for the community. Wishing you good health and happiness 😊
@TheMadMagician87 3 роки тому
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 роки тому
You guys are both so good at explaining electronics.
@johnmarlow6702 3 роки тому
fantastic , just bought one , now I shall use it with confidence . Thank you for another great video.
@AndreasSpiess 3 роки тому
I hope you will enjoy it!
@timothytapio4252 2 роки тому
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 роки тому
Alan is a source of a lot of good stuff. I watched all his videos ;-)
@uwepeters538 3 роки тому
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 роки тому
That was the goal. Glad it worked out! Thank you for the feedback.
@matthewmaxwell-burton4549 3 роки тому
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 роки тому
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.
@handyman7147 3 роки тому
One of the best tutorials. Thank you. Good to watch this before using the device for the first time.
@AndreasSpiess 3 роки тому
Glad it helped
@jimjam623 Рік тому
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 Рік тому
Glad you liked it!
@marcdraco2189 3 роки тому
Wow! Thanks for this Andreas! This is stuff I've desperately wanted to understand for years!
@AndreasSpiess 3 роки тому
Glad it was helpful!
@brianhind6149 3 роки тому
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 роки тому
Glad it was helpful!
@rudylopezmachin 3 роки тому
Excellent work, thank you very much for your time in making this video!
@AndreasSpiess 3 роки тому
Glad you enjoyed it!
@SimjetAU 3 роки тому
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 роки тому
You are probably not the only. It was the same with me. This was the reason for this video.
@hiobus 3 роки тому
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 роки тому
Glad it was helpful!
@acestudioscouk-Ace-G0ACE 2 роки тому
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 роки тому
Glad it was helpful! And thank you for your feedback.
@VK2AHB 7 місяців тому
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 7 місяців тому
Glad it was helpful!
@joepartlow 3 роки тому
One of the best videos I've seen on what a VNA is and how to use it.
@AndreasSpiess 3 роки тому
Thank you!
@brentjohnson6654 2 роки тому
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 роки тому
Indeed, we live in an excellent time with all this cheap electronics. The nanoVNA is one of the best things I ever owned!
@drm1drm1 3 роки тому
One of your best videos-clear and informative.
@AndreasSpiess 3 роки тому
Thank you!
@mdouble100 3 роки тому
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 роки тому
Glad it was helpful!
@michael2782 3 роки тому
This is THE place to find out about all VNAs, not just the NANO. Well done and thank you.
@AndreasSpiess 3 роки тому
Thank you. The "NanoVNA" is to help google find it ;-)
@michael2782 3 роки тому
@@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.
@mjf1422 3 роки тому
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 роки тому
Welcome aboard the channel!
@daa3417 3 роки тому
Great explanation of the Smith chart, the first time I saw one I was intimidated for sure.
@AndreasSpiess 3 роки тому
Glad you enjoyed it!
@SaltwaterC 3 роки тому
Thank you very much for this! I have been looking forward to see how NanoVNA V2 behaves.
@AndreasSpiess 3 роки тому
You are welcome!
@AndersNielsenAA 3 роки тому
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 роки тому
At least something ;-)
@user-ts8lo5bn4h Рік тому
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 Рік тому
Glad the video was helpful!
@jbgreer 3 роки тому
I’ll join the chorus in saying this is an amazingly good VNA explanation and demonstration.
@AndreasSpiess 3 роки тому
Thank you!
@nickhubbard3671 3 роки тому
Yes - I agree with your caption "Mandatory for Makers"! Thanks for a very informative video. 73s
@AndreasSpiess 3 роки тому
You are welcome! 73 de HB9BLA
@daveys 3 роки тому
Superb explanation of VNA and Smith chart use. Many thanks Andreas!
@AndreasSpiess 3 роки тому
You are welcome!
@jurgenbertschat2077 3 роки тому
Very good and easy explanation ! Gives me an easy review of my studies in the past. Thank you !
@AndreasSpiess 3 роки тому
Glad it was helpful!
@winsorro 3 роки тому
This video is truly excellent! I've seen other videos that provide incomplete and/or altogether incorrect information on the NanoVNAs.
@AndreasSpiess 3 роки тому
Thank you! Maybe that fact was the reason for this video ;-)
@jam3ohio 3 роки тому
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 роки тому
You are welcome! Enjoy your tool.
@aysuc01 3 роки тому
Thank you very much Andreas for making such that amazing videos. Everything is well covered and simple explanation. Thank you!
@AndreasSpiess 3 роки тому
You're welcome!
@CameraNut1000 3 роки тому
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 роки тому
VNAs are Perfect for HAMs and it is good if you educate them.
@holgerfunke5974 5 місяців тому
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 5 місяців тому
Vielen Dank für die netten Worte!
@gradje74 3 роки тому
Although I bought a NanoVNA-F, the theoretical info in your video is of great value. Thank you so much
@AndreasSpiess 3 роки тому
Glad it was helpful!
@WA1LBK 2 роки тому
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 роки тому
You will have a lot of fun with it, I am sure!
@bmacdoug Рік тому
Andreas, Thank-you so much for your lucid explanations anchored in reality. And thanks for introducing me to the VNA. Best.
@AndreasSpiess Рік тому
Glad you liked the content!
@dodegkr 2 роки тому
Great tutorial, thank you, perfect timing as I purchased a vna last week.
@AndreasSpiess 2 роки тому
Enjoy this little device!
@jduk1948 3 роки тому
Very good concise explanation. A great help as I've just purchased a NanoVNA-F. Thanks
@AndreasSpiess 3 роки тому
I hope you will have fun with it!
@JEFF-Elliott 2 роки тому
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 роки тому
Glad it was helpful! I hope you enjoy your nanoVNA...
@mszivatz 3 роки тому
I love this Video! It helps me to use my new device! Thank you!
@AndreasSpiess 3 роки тому
You're welcome!
@moacirg 2 роки тому
Perfect explanation! Finaly I understold the Smith Chart. Thanks!
@AndreasSpiess 2 роки тому
You are welcome!
@klassichd10 3 роки тому
Thanks for the inspiring video which will motivate many viewers to measure more in this "magic RF" field.
@AndreasSpiess 3 роки тому
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...
@johnbrandolini2915 3 роки тому
I got a kick out of your VSWR comment. I am both an RF engineer and a ham. Before I retired I had to constantly switch gears about impedance matching depending on who I was talking to. In my experience most people working with antennas tend toward VSWR where engineers working on integrated systems talk return loss. My own preference is return loss because for some reason I am better able to envision it. VSWR is a dimensionless ratio whereas return loss is an actual measurement of how much power is being reflected back into the system. Last company I worked for actually reported both VSWR and return loss for their products.
@AndreasSpiess 3 роки тому
I agree with your observation about antennas. 1:1 is a simple goal there...
@saxpert 3 роки тому
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 роки тому
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.
@dougbas3980 2 роки тому
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 роки тому
A presentation always is better than just a video. So: Well done!
@AragonDubs 3 роки тому
Congratulations Andreas! You make easy to understand all with your videos! You are from this planet? MANY thanks! 73
@AndreasSpiess 3 роки тому
Yes I am ;-) And Thank you!
@jessemackenzie6516 Рік тому
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 Рік тому
Glad the video was helpful to extend your knowledge a bit. It is always good to know a bit more than the minimum ;-)
@fcita82 3 місяці тому
Excellent tutorial. Complex made simple. Thank you!
@AndreasSpiess 3 місяці тому
Glad you liked it!
@vincerooney2445 3 роки тому
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 роки тому
For me, UKposts is like an academy with excellent teachers. Maybe not easy to find sometimes...
@shashipoddar4345 Рік тому
Thank you SIR! Very helpful for somebody new in RF scene.
@AndreasSpiess Рік тому
You are welcome!
@samualwhittemore228 3 роки тому
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 роки тому
It became much easier to build such projects. Less guesswork...
@BenMitro 3 роки тому
This video is an excellent introduction before one goes to W2AEW excellent series. Thanks Andreas.
@AndreasSpiess 3 роки тому
Definitively the right sequence ;-)
@bjj6708 Рік тому
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 Рік тому
Glad my video helped for your argumentation ;-)
@GateKommand 3 роки тому
Andreas thank you very much mate, I found that video extremely educational and helpful!
@AndreasSpiess 3 роки тому
Glad it was helpful!
@mahudson3547 3 роки тому
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 роки тому
Those Bird Wattmeters still are great for their purpose! But I already said it many times: We live in a wonderful (electronics) time!
@Beeblzaphod 3 роки тому
And again another great video. Finally I got some missing answers. Thanks a lot.
@AndreasSpiess 3 роки тому
That is the goal of the video. Glad it worked!
@alanclark988 3 роки тому
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 роки тому
Thank you for your compliment! It values more because you seem to know what you are talking about :-)
@paulcohen1555 3 роки тому
I know from the introduction that this will be an excellent lesson.👍
@AndreasSpiess 3 роки тому
I hope so ;-)
@maxenielsen 7 місяців тому
Excellent explanation! Thank you!
@AndreasSpiess 7 місяців тому
You're very welcome!
@PascalCASTRATARO 3 роки тому
Congratulations for this learning, I just have a shadow area it's the Return Loss and Decibels, thank you again!
@AndreasSpiess 3 роки тому
You are welcome!
@Soggytiri Рік тому
Excellent! Thank you for explain these concepts so clearly!
@AndreasSpiess Рік тому
You're very welcome!
@MrZerohour1967 Рік тому
What an awesome video. So straight forward and explained so well. Thank you.
@AndreasSpiess Рік тому
Glad you liked it!
@tiborherman5471 3 роки тому
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 роки тому
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 ;-)
@AjinkyaMahajan 3 роки тому
Wonderful explanation. Thanks!! Cheers✨✨
@AndreasSpiess 3 роки тому
You are welcome!
@blackkissi 3 роки тому
Well, I definitely learned a lot from this video. Thanks
@AndreasSpiess 3 роки тому
Glad it was useful!
@McTroyd 3 роки тому
Wow. I wish all explanations of the Smith chart were that clear. Thanks!!
@AndreasSpiess 3 роки тому
Glad you liked it. Thank you!
@stazh9118 14 днів тому
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 13 днів тому
I am sure you will like your VNA!
@Beckyphillipsguitar 3 роки тому
Most understandable video regarding the Smith Chart. Many thanks :)
@AndreasSpiess 3 роки тому
You are welcome!
@TheKurtPoulsen 3 роки тому
A superb video for VNA newcommers to understand what it is all about
@AndreasSpiess 3 роки тому
Thank you. And thank you for your help producing it!
@KingLoopie1 Рік тому
Thanks for hammering on calibration! I've seen videos that say you calibrate once and you're done forever... My BS meter immediately pegged and bent the needle... 👍
@AndreasSpiess Рік тому
If the conditions do not change and you do not expect too much this is probably ok. Still it is good to understand where you do shortcuts...
@mikewillis1592 3 роки тому
Well explained, especially Smith charts which are frightening things that should be introduced to students with care. I found my V2 worked to 4 GHz and is quite usable for setting up 3.4 GHz 9cm antennas. You could use it to look at your POTY and figure out how it works.
@AndreasSpiess 3 роки тому
I looked at it when I built my POTY. It did not expose the two dips described by others. This is why I was worried in the beginning. Now I still struggle with the Ethernet connection of my Pluto...
@stevephillips6106 3 роки тому
The best video on the subject I have seen. Many thanks.
@AndreasSpiess 3 роки тому
You are welcome!
@sichel94sam 3 роки тому
Thank you for no midroll ads on a 25min video! YT must hate you for that :D
@AndreasSpiess 3 роки тому
I do not know. But I make my videos for my viewers ;-)
@seanmangan2769 3 роки тому
Thank you! I now have a much better understanding of my VNA.
@AndreasSpiess 3 роки тому
Happy to help!
@doccarson63 2 роки тому
Video covered EVERY THING! Great Video and easy to understand tutorial.
@AndreasSpiess 2 роки тому
Glad you enjoyed it!
@KeysightLabs 3 роки тому
Great video! I've been playing around with mine and am pleasantly surprised given its price. Regarding 2:45 a "signal Analyzer" gets phase info, a "spectrum Analyzer" does not.
@AndreasSpiess 3 роки тому
I usually use "Vector Analyzer" for the devices measuring phase, too. What is the difference between a Vector Analyzer and a Signal Analyzer?
@Johnmfoss 3 роки тому
It seems much more simple after your video. I thank you
@AndreasSpiess 3 роки тому
Glad to hear that!
@RaviPujar 3 роки тому
Wonderful explanation. Learnt a lot of things. Thank you 👍
@AndreasSpiess 3 роки тому
Glad it was helpful!
@mikeissweet 3 роки тому
Didn't think I needed to watch this one, but indeed I have been using mine wrong. Thank you!
@AndreasSpiess 3 роки тому
As written in the thumbnail: Viewing is mandatory ;-) I made this video because a lot of people do one or the other mistakes.
@mikeissweet 3 роки тому
@@AndreasSpiess 😄 you were right!
@PremMenon 2 роки тому
Very educational. Well articulated. Thank you sir!
@AndreasSpiess 2 роки тому
Glad you enjoyed it!
@requiem4adreamc Рік тому
I almost understand everything you presented. That is not because i am smart but that is because you lectured it great! Thank you very much :)
@AndreasSpiess Рік тому
Thank you for your kind words!
@thevidco 3 роки тому
Nice refresher course - thank you
@AndreasSpiess 3 роки тому
You are welcome!
@dang25272549 Рік тому
Thanks so much for a nice and clear tutorial.
@AndreasSpiess Рік тому
You are welcome!
@h.sapienstechnologicus8865 3 роки тому
Finally someone explained how SWR is expressed in dBi. Subbed.
@AndreasSpiess 3 роки тому
Glad it was helpful!
@h.sapienstechnologicus8865 2 роки тому
@@AndreasSpiess I measured the 50 Ohm calibration cap with a multimeter. Displayed 52.2 ohms.. .. which is +/-0.5% mistake of my cheap multimeter.
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