Great video as always! And remember folks, the Open, Short and Load calibration is on the CH0 cable and Isolation and Thru is on the CH1 cable as shown.
@newq Жыл бұрын
I just got one of these a few days ago and I feel like being a kid on Christmas morning every time I find out something else it can do. I don't think I've ever purchased a tool that has this much bang for your buck. Absolutely indispensable! Thank you for the excellent video. Explained everything very thoroughly.
@robertnagy21634 жыл бұрын
Your channel is tremendously valuable to the Ham community. Well-done. Making VNA day #2 here a joy!
@TheDefpom4 жыл бұрын
With all of these VNA videos I might actually be able to figure out how to use my one once it arrives.
@nopenadanowaynohow4 жыл бұрын
I have just began my first longer term "retirement" project. Hoping to build my own LDMOS Amp for HF. I have just started at the designing of my filters. This video is EXACTLY what I was needing !! Thank you again for taking so much of your time to contribute to the Ham and electronics hobbyist !
@nopenadanowaynohow4 жыл бұрын
1988 24 yrs old new Ham License and a HW-101. 100' Roll of RG8 and a spool speaker wire from Radio Shack. Not even an swr meter. Had zero idea of how little a knew ! Had a blast, and still do learning and enjoying all these years later. And now that I am starting to have the time to dig in deeper, your videos have truly been a great help !
@gordonwedman31794 жыл бұрын
Mine is on the way. Will be watching all these at least two more times.Many thanks
@RadioWhisperer4 жыл бұрын
Love these VNA videos! Just got mine in and I'm looking forward to playing with it. Thanks for doing these
@MrNetmask4 жыл бұрын
im waiting for mine :)
@gunnarisaksson867710 ай бұрын
Today I received the same VNA as you have from China. That makes your videos more informative than I expected. 😊😊😊
@lambdaprog4 жыл бұрын
It's worth creating a NanoVNA playlist. This content is gold.
@Elephantine9997 ай бұрын
Good video--clear, detailed without going into the weeds, and useful. Thanks!
@thunderbuilt774 жыл бұрын
Nice! I'm really learning my way around these menu settings. Best instructor i've ever seen.I hope you never get tired of doing these videos or discover a new hobby like pottery or something lol.
@ahmedsherif21824 жыл бұрын
I am really inspired by you and your videos. I hope that one day i reach a fraction of your knowledge, God bless you and keep up the good work.
@NexxuSix4 жыл бұрын
Thank you for the video, Alan. Your tutorials are showing me just how powerful this little VNA really is. I was happy with making a simple plot of one of my antennas. Thanks to your videos, now I can see how to configure the VNA for more complex analysis and measurements. 73!
@silasmarner75864 жыл бұрын
Great video as always. I've been using VNAs for over 30 years and you present the information very clearly.
@MarioIZ0IRH3 күн бұрын
Great video. Thanks.
@mirsalisawood47624 жыл бұрын
I tried to take a note from your video, but your video is the best and concise note about the topic. Love your each and every video ❤️
@DeeegerD3 жыл бұрын
Getting interested in getting a VNA and the TinySA. When I became a HAM at 22 I wanted to create my own transciever one day. Almost 40 years later the tools are becoming available ;) Now I need to find that incentive again ;)
@FlyingShotsman4 жыл бұрын
Another fantastic video from my favorite RF guru. I'm learning a ton of practical, useful info from this series. Thanks, Alan!
@hugovanderzee49444 ай бұрын
Exactly what I was looking for. Thanks.
@Steve-GM0HUU Жыл бұрын
👍Just what I needed to start testing my hombrew HF filters with a NanoVNA. Thank you.
@southernexposure123 Жыл бұрын
Thank you. I appreciate how you tell us they whys of the difference in what the application showed us what to expect and "why" the vna display wasn't an exact duplicate..
@radioman47386 ай бұрын
I used this information to set up my NVNA to sweep an old HF Low Pass filter and it worked, only thing I did differently was to set the stop frequency much higher. Noticed that on 50 MHz there was a bit of loss so for those Hams that work this band you may want to look into this.
@EwaldBurger4 жыл бұрын
Since i bought this vna several months ago i hoped Alan would do some video’s on it, and see how lucky i am/we are!
@webejamn22 жыл бұрын
First, your videos are exceptional and very informative. I am trying to measure the SWR and insertion loss of some coax switch's within the freq range of 1-460MHz. I fully calibrated my NVNA per your methods withing that freq range, and are using S11 for SWR and S21 LOGMAG for insertion loss. The problem I'm seeing is that when I measure between S11 and S21 (w/o DUT), the insertion loss is essentially 0.0db, whereas the SWR shows a slowly rising slope of 1.015@1MHz, 1.116@144MHz, 1.946@440MHz and 2.028@460MHz. If I disconnect S21 from S22, and attach a 50 Ohm load on S11, the SWR is essentially flat at
@jj-js5sx4 жыл бұрын
That was an excellent video. You perfectly answered the questions that I asked after watching your previous video. I'm sharing a link to both videos with others. Thank you !
@glennwoodward774 жыл бұрын
Excellent video.... to be expected from you of course. Very cool product I’ve seen a few do videos on but your videos are the ones I value and trust. Thanks for such a professional and voluntary explanation of all these cool things us newbies and hobbyists love.
@dxexplorer Жыл бұрын
I have to say a big thank you for this video. Until now I just "had an idea" of how I should measure the filters. Not I actually know the proper way. I wasn't far... but now I will be spot on ))) 73 DE YO6DXE.
@dtbishop4 жыл бұрын
Keep the VNA videos coming!
@tomswisher53054 жыл бұрын
Excellent video as always, Alan! I was waffling between the MiniVNA Tiny (at ~ $500) and the NanoVNA, but your videos tilted me to the NanoVNA.
@w2aew4 жыл бұрын
at about 1/10th the cost, it's hard to justify the MiniVNA.
@barrybarry66894 ай бұрын
I have a junkbix full of low pass filters. They are quite old since I have been a HAM since 1965. With your help an the Nano VNA H4 I can finally learn which filter truly works the best. I wonder if the “bandwidth” guy ever got his General and what toaster he is operating?
@davidkierzkowski4 жыл бұрын
Great vid, these thing are cheap, popular, and not terrible! I like them
@dman525663 жыл бұрын
Great video. Really helped explain the setup and use of the nano vna.
@DonDegidio4 жыл бұрын
Hi Alan, Nice video showing the NanoVNA features in use. I would say the filter meets the design requirements. Stay safe. 73 WB3BJU
@rogerp58164 жыл бұрын
Could you do something similar to characterize unknown ferret cores to give you a good idea what mix they are?
@glenwoofit4 жыл бұрын
Excellent Video as always. I've got one of these but I don't understand it well enough so keep these videos coming. As I'm sure I will be using these as a reference when I'm using mine.
@Tony770jr4 жыл бұрын
I ordered one. Very cool!
4 жыл бұрын
Great video, as always! Can you, please, cover measuring ferrite toroids using nanoVNA?
@kd5ozy4 жыл бұрын
I just ordered one. I hope it will take the place of my bulky HP 8754 and normalizer
@stationvictormike34153 жыл бұрын
Thanks for everything... I followed the instructions and got it down and works nice.
@BersekViking4 жыл бұрын
Fantastic video as always!
@breadfan34153 жыл бұрын
Amazing nanoVNA series!!
@octavmandru92194 жыл бұрын
One doubt with these products is accuracy. Well, I would call this one "proven by design". Excellent series, for regular humans who can't afford expensive equipment
@Steve-GM0HUU Жыл бұрын
Yes. I was concerned about accuracy. However, so long as you pay close attention to calibrating them, they seem to display acceptable results for hobby use.
@RobB_VK6ES4 жыл бұрын
40 year lapsed amateur and just going through re-licencing ATM. How things have changed. Most up to date stuff is an IC720A, IC251A and IC207H but have a 7300 in the mail along with the nanovna. It is going to be essential given the area I have for antennas. VK6?? :)
@Testequip4 жыл бұрын
Thanks Alan. I think it's time for me to purchase a NanoVNA.
@W1ZY Жыл бұрын
Very valuable tutorial.
@exus4mie3 жыл бұрын
Thanks for the video! For some reasons, it didn't work for me on my Windows 10 laptop, but no issue on another one with Windows 7 (same procedure as you described).
@yo3cwt7374 жыл бұрын
Congratulations!!! Please thinking of doing a video with ferrite toroids BalUn/UnUn measurements on NanoVNA. Thank you!
@Radiofreak10414 жыл бұрын
These videos are fantastic! Can you some time make a video about phase measurements with this device?
@w2aew4 жыл бұрын
On my list of future videos.
@waynegram89074 жыл бұрын
Can you make a video talking about different RF microstrip filters using your NanoVNA. You can make the microstrips filters using copper tape and explaining how microstrips work and the theory behind microstrips
@TheArtofEngineering8 ай бұрын
Thanks de VK2AOE....73
@john-allenduskglass31933 жыл бұрын
this is awesome, i can almost understand this!
@omsingharjit Жыл бұрын
i wanna see introduction video of saw on your channel ? any !?
@carldavis82284 жыл бұрын
Keep it up.
@nathankatz25292 жыл бұрын
Wow, hard-core set-up ...
@najeebqureshi64092 жыл бұрын
Can you make a video to measure resonant frequency of LC circuit. it will be agreat healp and useful for everyone.
@zvpunry19714 жыл бұрын
Now I know how to deal with that touch screen. I'll attach a plectrum to a corner of the NanoVNA. ;-)
@Testequip4 жыл бұрын
Don't tell me you a guitarist as well Alan
@allenlutins4 жыл бұрын
According to his reply to a comment in the previous video, that pick came with his NanoVNA. My NanoVNA didn't come with a pick or stylus, but (like Alan's) it has the larger touch screen, and I don't have any trouble using my fingertips to select menu items (although you may want to use a stylus to avoid smearing the screen).
@bfx81854 жыл бұрын
THX excellent
@adrian_sp6def Жыл бұрын
is it possible to measure harmonic contents of trx rf output using NanoVNA?
@seandoofer57203 жыл бұрын
Excellent video. I didnt know about loading ch1 with the 50r load. Can this Vna be used to do this for powered filters?, I guess it might need an attenuator to avoid saturation.
@Halerno3 жыл бұрын
Great. ( really great) Tnx a lot. '73
@jj-js5sx4 жыл бұрын
Trivia question. Unrelated to this video. Some experiences from my early childhood stick in my mind- not many, and not clearly, but some. One was a call-sign that a neighbor had. I've looked it up a couple of times, but can't find it listed. I would guess this is from circa mid to late '60s. I thought the call-sign was KKI3597 (kilo kilo India 3597 -- Maryland). Did call-signs change, or is my memory playing tricks on me? Thanks.
@w2aew4 жыл бұрын
That was a call sign for Citizen’s Band Radio, back when that service required a license. It is not a ham radio call sign.
@jj-js5sx4 жыл бұрын
@@w2aew ah- great. That makes sense. Thanks for the lead !
@kumismanis2 жыл бұрын
Thank you for understanding thru step calibration. But i think that this video more relevan give tittle "how to calibrate nano VNA"
@Testequip4 жыл бұрын
The German Hamfest live stream apparently indicated that the new Nanovna is being developed that peaks around 2 to 3GHz and that it might be worthwhile to wait until early next year when they become available. Has anyone heard anything regarding the above?
@w2aew4 жыл бұрын
Yes, the S-A-A-2 (NanoVNA V2) goes to 3GHz. Available now, but only with small display and no enclosure. I would imagine that both of these issues will be addressed in the next few months...
@miketoreno49694 жыл бұрын
Damn that is a good device.
@Andy205ro2 жыл бұрын
Can this be used also to check antennas if are tuned for 5.8ghz? like PS200 does, but is only 2.7ghz
@w2aew2 жыл бұрын
You would need one that covers that frequency range, such as the NanoVNA LITEVNA64 store2.rlham.com/shop/catalog/product_info.php?products_id=75669
@qrplife3 жыл бұрын
It would be interesting to compare the graph results from measuring this filter with the measurement done with the upgraded firmware from #320, provided you still have the same filter assembly available. Does the increase in number of points bring out the sharper dips in the S11 predicted by the design software?
@w2aew3 жыл бұрын
I have. The dips in the S11 where a little deeper - but I don't recall how much, maybe another 10dB.
@KA6WKE4 жыл бұрын
I'm interested in using the NanoVNA to measure crystal filters. Could you do a video on this topic? Thanks and 73!
@w2aew4 жыл бұрын
I'll add that to my list. In the meantime, the RF Guru Wes Hayward W7ZOI has a nice writeup on this: w7zoi.net/nanozoi.pdf
@electronic79794 жыл бұрын
👍👍👍
@rjrodrig3 жыл бұрын
What tool did you use to simulate the filter? ADS, Nuhertz, Genesys?
@w2aew3 жыл бұрын
Elsie from Tonne Software.
@kd5ozy4 жыл бұрын
going to try it on a 4 can set of sinclair BPBR 2m duplexers
@w2aew4 жыл бұрын
Let me know how it comes out.
@Screamingtut4 жыл бұрын
which of the NanoVNA is best to get and from who?
@Roy_Tellason3 жыл бұрын
I figured early on that you pretty much favored BNC connectors, but have noticed lately that more stuff seems to be using SMA instead. (I rather prefer BNC myself.) I've also heard that SMA connectors have a fairly limited number of cycles when you can plug stuff into and out of them, but have not experienced this for myself just yet. I've considered getting some "savers" (an SMA male-to-femail adapter) to put on the Nano, but haven't gotten around to that yet. Your thoughts on this?
@w2aew3 жыл бұрын
SMAs are pretty rugged. The 3.5mm and 2.92mm, which are all mechanically compatible with the SMA are a little less rugged. Connector savers are generally a good idea.
@mnh-jansson4 жыл бұрын
Great video! Any chance you could compare the NanoVNA to a professional grade VNA? And also maybe see what the real usable frequency range of the device is. I've heard that it is lower than advertised. Thanks again for the video!
@w2aew4 жыл бұрын
I plan on doing this in future videos.
@w2aew3 жыл бұрын
@@user-lp3cf5yn5b I did a bit of a comparison in this video: kzbin.info/www/bejne/fZrTdIl7qM6kjsU
@stevebailey1682 Жыл бұрын
Hi Alan...thanks for the good video. I have a question. I have the 2.8" version of the NanoVNA-H. I designed a Pi (low pass) filter (2 caps, 1 inductor) with a cutoff frequency of 150 Mhz. The idea is to reject everything from 400 Mhz on up. I am rejecting a 400 Mhz radiosonde transmission. When I put filter as DUT between S11 and S21 and measure S21...I see the 150 Mhz -3db corner...attention continues down as expected til around 280 Mhz (at -45db)...then as frequency increases from there...attention decreases. At 400 Mhz, attention is only -26db. I calibrated my Nano as instructed. Any idea what is going on? Thanks, Steve
@w2aew Жыл бұрын
Do you have any evidence that this is not how the filter is actually behaving? How are you connecting to the filter (clip leads or coaxial RF connectors)? Is the filter enclosed/shielded to prevent coupling from input to output?
@stevebailey1682 Жыл бұрын
@@w2aew Hi Alan...my problem is inexperience. I just assumed I should be seeing a flat, stop-band upstream (up frequency) from a low-pass filter. Unfortunately, this is not what I am seeing. My filter is in a small metal box with BNC jackets on either end. Components are soldered directly to either the center posts or ground posts. Could my connecting cables be the problem...or are those potential artifacts calibrated out? Any further thoughts?
@w2aew Жыл бұрын
@@stevebailey1682 connecting cables could be leaking. As an experiment, remove the filter but leave the cables as the would be as if the filter were present. See how much attenuation you have at the higher frequencies. It is also likely that there is coupling from input to output inside your filter enclosure. You might try making a shield that separates the input from output inside the box, grounded to the box, with just small pass-thru holes for the connections
@newmonengineering4 жыл бұрын
I have a need to translate any voltage above 5V to 5V or below with sensitivity on voltage change. I was thinking like a zener and a few resistior and potentiometer.. i need to measure a voltage drop that happens in 48 hours. Say I have 48V and in 48 hours its 30V is there a way I can measure that drop with an arduino Analog with any sensitivity to that small drop??? If you have any thoughts please i would love to hear how I could do that.
@waynegram89074 жыл бұрын
Why does various RF filters S21 will look the same using a 2 port S21 & S12 frequency response plot looks symmetrical. But the Smith charts complex impedance is different for S11 and S22, any reasons why the complex impedance are NOT symmetrical and the S11 and S22 are not at 50 ohms and have different complex impedances but the frequency response lots looks the Same symmetrical complex impedance?
@typedef_3 жыл бұрын
Hey ! I need to transmit an analog HD video signal (AVI, TVI or CVI) over a line that is not coaxial and is not very long (max 50m or so). For this, I am using a differential line driver at one end and a differential receiver at the other to turn the signal back to single ended (these are some AD high speed op amps). What I found is that I need to have frequency dependent gain at the receiver (a low pass filter in the feedback loop) in order to receive the signal without distortions (ex. without losing color). Can I use this particular VNA to adjust that receiver gain so that I get as flat a response as possible over that line ?
@w2aew3 жыл бұрын
You can, but you'll need to provide a balun at both ends to convert between unbalanced 50 ohm to the balanced line.
@fredrikragnarsson68894 жыл бұрын
Great videos! I have learnt a lot from this channel. About the nanoVNA. Do you think it’s possible to measure s parameters of a BJT (at 144 MHz) and get fairly accurate results? I’m thinking of a home made board with sma connectors and circuits for biasing the transistor.
@w2aew4 жыл бұрын
It might be a little dicey. One of the main problems is that you can't change the output amplitude of the NanoVNA (so it might not be the right amplitude for your tests), and the output is a squarewave (harmonic content might alter the device characteristics).
@nouram59952 жыл бұрын
Hello, There are different between librevna and nanovna?
@w2aew2 жыл бұрын
I'm sure there are differences. I've never used a librevna, so I don't know what the differences are.
@joejoe4games4 жыл бұрын
Love these NanoVNA videos... have you had a chance to look at the NanoVNA V2 yet? that think goes all the way to 3Ghz so some 2.4Ghz ISM stuff is a real possibility...
@w2aew4 жыл бұрын
I haven’t gotten a look at the V2 yet.
@pratwurschtgulasch66624 жыл бұрын
I have a (perhaps stupid) question, when the frequency is outside the pass band of the filter, I always thought the filter is essentially eating up the power but in your demonstration it looks like all the power is reflected back to the source. that can't be good or is my understanding wrong? perhaps since there is no 50 ohm resistor involved the power has to go somewhere... learning new stuff all the time :D
@w2aew4 жыл бұрын
It depends on the filter design whether signals outside of the passband are reflected or absorbed.
@pratwurschtgulasch66624 жыл бұрын
@@w2aew well i learned something new thanks to your video :) it looks like all common filters reflect the signal back, i never knew that. for a low-pass or high-pass i think one has to make 2 filters side by side to split the signal like a cross-over and then direct one into a 50 ohm resistor. i'm going to do some research on this :)
@bobkozlarekwa2sqq594 жыл бұрын
I see you use the larger 4.3” display VNA. Where did you purchase it from? I have the smaller version.
@w2aew4 жыл бұрын
I have the H4 - it is available from R&L Electronics.
@Roy_Tellason3 жыл бұрын
@@w2aew That's where I got mine, along with some adapters for SO239, BNC.
@shrutisrivastava8977 Жыл бұрын
The display always shows S11 and S21. How could we measure S22? Also, Open, Short, and Load should be connected (while doing calibration) on both ports, and I don't see the option to change the port while calibrating the port 2. Please help.
@w2aew Жыл бұрын
The nanoVNA is a 2-port, 1-path VNA. This means that it has an RF source only on 1 port. Thus, it can't measure S12 or S22 at the same time as S11 and S21. The only way to measure the reverse parameters is to reverse the connections to the device under test.
@shrutisrivastava8977 Жыл бұрын
@@w2aew Thanks. It makes sense. Are there some documents showing its detailed internal architecture?
@w2aew Жыл бұрын
@@shrutisrivastava8977 If you google "nanovna schematic", you will find a lot of references
@shrutisrivastava8977 Жыл бұрын
@@w2aew thanks.
@carlosriccio78594 жыл бұрын
Now is a new version OF nano VNa V2 that goes to 3Ghz without use harmonics, and still afordable, take a look
@waynegram89074 жыл бұрын
I'm confused what the complex impedance is a spiral circle, what is causing the complex impedance to be a spiral circle pattern? and how can you change/alter the complex impedance pattern? can you show how to do that in a youtube video because changing the inductance and capacitance doesn't change/alter the complex impedance pattern
@w2aew4 жыл бұрын
Take a look at my impedance matching videos with the Smith chart to learn more about that.
@waynegram89074 жыл бұрын
I have watched your videos on the smith chart about the upper part of the smith chart is the inductances and the lower part below the mid line is the capacitance. I'm very confused about when you measured the antenna in your video adjusting the inductance dial knob and capacitance dial knob that it didn't change the complex impedance arch, curve, spiral circle. Any reasons why and what does alter/change the complex Impedance of the Antenna? or RF filter circuit?
@wolfmonk9d4 жыл бұрын
I wonder what the IF bandwidth is, likely it has an order of 100 kHz or so. It's a fairly wide IF bandwidth but IMO reasonably narrow to get accurate measures of low pass and high pass filters. I have no idea what minimum band-pass filter bandwidth can be measured by NanoVNA, but will investigate it when my NanoVNA will arrive at me. :) I also want to measure its uncorrected parameters to figure out its precision.
@w2aew4 жыл бұрын
I think it’s on the order of 10kHz
@wolfmonk9d4 жыл бұрын
@@w2aew yes probably. I'll try to check specifications or even try to measure it when possible.
@Manawyrm4 жыл бұрын
@@wolfmonk9d It uses a regular audio codec chip, that limits the IF bandwidth a bit...
@w2aew4 жыл бұрын
I remember reading somewhere that it down converts to 5kHz, that what made me think the IF BW is
@wolfmonk9d4 жыл бұрын
@@w2aew exactly. I always confuse NanoVNA with grown-up devices like Agilent or R&S which I'm dealing with at the office. Their usual default IFBW somewhat 10-100 kHz. But grown-up devices have a slightly different architecture. :)
@ydonl4 жыл бұрын
The Joker: "Where does he get those wonderful toys?"
@cijymathai12353 жыл бұрын
Hi Alan, thanks a lot for solving our doubts on RF stuff. Regarding VNA calibration, I have a doubt. I wonder how to do the calibration if I have a circulator in the transmission (S21) setup as shown in the link below drive.google.com/file/d/1hw2uE5iOTcQSFHt902wwOkVx-izm9MTd/view?usp=sharing. Would you please clarify my doubt? Your help will be highly appreciated. Thanks in advance.
@w2aew3 жыл бұрын
If you're interested in having the calibration compensate for the circulator (i.e. remove it's effects from the measurement), then the thru calibration should connect Port1 to the DUT port of the circulator, and the output to Port2 as shown.
@cijymathai12353 жыл бұрын
@@w2aew Thanks for the immediate reply, Alan. I will try and let you know if the calibration turns out bad... Assume it has gone well otherwise... :)
@cameronturner74753 жыл бұрын
I'm just a guy trying to pass my general, get on HF and do a little DXing. This is just eating too much bandwidth for me.
@donepearce9 ай бұрын
Why do radio amateurs use SWR? Return loss is a far better, more informative measurement.
@w2aew9 ай бұрын
Likely it has a lot to do with the availability and cost of the measurement gear. Traditionally, the least expensive tool that is available or used by amateurs is the SWR meter, either built-in to the radio or external.
@garywaddingham71792 жыл бұрын
I never saw the video. I quit during the third long ad.
@w2aew2 жыл бұрын
Sorry, I have no control over that. Most of the adds are "skippable" after the first 5 seconds or so - at least that's the case on a Windows PC / browser platform.
@webejamn22 жыл бұрын
First, your videos are exceptional and very informative. I am trying to measure the SWR and insertion loss of some coax switch's within the freq range of 1-460MHz. I fully calibrated my NVNA per your methods withing that freq range, and are using S11 for SWR and S21 LOGMAG for insertion loss. The problem I'm seeing is that when I measure between S11 and S21 (w/o DUT), the insertion loss is essentially 0.0db, whereas the SWR shows a slowly rising slope of 1.015@1MHz, 1.116@144MHz, 1.946@440MHz and 2.028@460MHz. If I disconnect S21 from S22, and attach a 50 Ohm load on S11, the SWR is essentially flat at