Using The Nano VNA to Solve Real World Problems (
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- Опубліковано 15 тра 2023
- Steven Jensen sent me some charts on using the Nano VNA. Watch to learn more about his presentation.
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the nano vna gets you in the game and that's a game changer for so many people who cost is a barrier to entry
(and i can say from experience that cost kept many out of the game)
great video..
You’re the man Dave. 6 months ago: “nanovna too complicated don’t use it”
Today: “nano vna to solve real world problems
mine is used for antenna check/tune and coaxial cable verification (i can to see on it the length of my coax cable and if any open/short, with the distance of it, before my antenna).. i can do a cable impedance check too if needed.. for me it's a must to have in RF!! ❤
I told ya Dave! Now that VNA's are affordable, anybody that plays with RF much at all should learn how to use one. Good episode. Thanks!
I still have nightmares about using Smith charts in my university exams - this was a great explanation.
Very interesting Dave, thank you; 73 Bob
Nice Dave, fun stuff!
Thank you, Dave.
Amazing how tiny things are now. N0QFT
As said, I have thrown 2 Nano VNAs in the garbage, because batteries were about to explode.
Now I have a Rig Expert Stick Pro Antenna Analyzer/. Works great!!!!!
I had no idea how to make changes to the reactance on the smith chart. That's great!
The NanoVNA definitely punches above its weight. W2AEW has a video on tuning a duplexer.
A low return loss means a HIGH SWR. Return loss is measured in positive numbers. A 12dB return loss might be like a 1.7:1 SWR. There are calculators online that will convert for you.
I have as much fun using my NanoVNA as I do my radio.
I want to build an RLC circuit with all variable components to add to my antenna lab. I've already sourced a variable plate capacitor, log potentiometer, and will hunt down some variable inductors. It's like building a whah pedal circuit for RF... I will run some spreadsheets to determine the ideal tuning ranges... .22uF Cap, 1K Pot, 10uH Inductor...
Somehow this explanation of Smith charts actually clicked with me, whereas the explanation in the extra handbook just kinda bounced off. I think the real-world context helps a lot, at least for how my brain works.
I have a nanovna and I have used it to tune some things, but I'm still suspicious of its accuracy. Without having a $14k VNA to compare to, what could I do to validate its results? In particular for things more complex than a simple SWR reading.
You must have missed this @ 13:10 where the question "How accurate is a Nano VNA " is answered... very accurate.
You need to know how to calibrate it so you can see the results you are desiring to measure.
@@3henry214 No, it answered the question "How accurate is Jensen's Nano VNA". Given that it's an open source design and produced by a lot of manufacturers, it's still a valid question to ask if _my_ Nano VNA is accurate, or how to figure that out.
I will admit regardless of any explanation I've watched this nano baffles me, swr and feedline readings are easy but for resolving or investigating any other issues I'm lost.. 🤷🏼♂️
I take it you are getting complaints about how much time you spend shilling patreon. Excellent solution.