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Author Topic: nanoVNA V2 - a low cost 3GHz open source network analyzer  (Read 2626 times)
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an007_rld
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« on: July 29, 2020, 04:34:05 16:34 »

Hi All,

I find a very interesting project which I think is worth to share:

Project webpage: https://nanorfe.com/nanovna-v2.html
Discussion page on EEVBlog forum: https://www.eevblog.com/forum/testgear/nanovna-v2-aka-s-a-a-2/
Discussion page on groupsio: https://groups.io/g/NanoVNA-V2/topics

An improved version up to 6GHz: http://www.yl3akb.lv/content/vna_v2/vna_v2.php

hope this helps,
-an
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optikon
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« Reply #1 on: July 29, 2020, 10:33:51 22:33 »

Hi All,

I find a very interesting project which I think is worth to share:

Project webpage: https://nanorfe.com/nanovna-v2.html
Discussion page on EEVBlog forum: https://www.eevblog.com/forum/testgear/nanovna-v2-aka-s-a-a-2/
Discussion page on groupsio: https://groups.io/g/NanoVNA-V2/topics

An improved version up to 6GHz: http://www.yl3akb.lv/content/vna_v2/vna_v2.php

hope this helps,
-an

Yes, I have been watching this develop on EEVblog.

Where can we buy one?
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pickit2
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« Reply #2 on: July 29, 2020, 11:55:19 23:55 »

Yes, I have been watching this develop on EEVblog.
Where can we buy one?
https://www.tindie.com/products/hcxqsgroup/nanovna-v2/

on the page it says there are many clones on Aliexpress and eBay.
Many of these perform poorly, can not meet the specifications,
and do not go through any quality control!!!

so take your pick...
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egstudio
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« Reply #3 on: July 30, 2020, 04:58:19 04:58 »


Very good V1 and V2 test in German and in English (V2 in preparation, for now only German)

http://www.gunthard-kraus.de/



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mEErEck
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« Reply #4 on: August 02, 2020, 07:12:46 19:12 »

For those who would prefer a PC-based VNA that is reasonbly-priced, please check this 4 GHz VNA:
https://pocketvna.com/
Still, its software is open-source.
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egstudio
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« Reply #5 on: August 04, 2020, 03:43:14 03:43 »


https://pocketvna.com/

"High performance: up to 80 dB dynamic range in the MHz range; up to 40 dB in the GHz range
Broadband: 500 kHz to 4 GHz"

not a valid choice IMHO.

Current nanoVNA 2:
Frequency range: 50kHz - 3GHz
System dynamic range (calibrated): 70dB (up to 1.5GHz), 60dB (up to 3GHz)

there will be a 2nd nanoVNA revision in 2-3 months with more dynamic and less noise





Posted on: 04-08-2020, 02:43:33 - Automerged



another "extreme" diy vna:

https://erikkaashoek.blogspot.com/2019/02/tuning-25ghz-cavity-filter-with-home.html

https://github.com/erikkaashoek/Tapr-VNA

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anotherandrew
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« Reply #6 on: August 04, 2020, 02:30:58 14:30 »

my pick is https://hforsten.com/improved-homemade-vna.html
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bobcat1
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« Reply #7 on: August 09, 2020, 09:40:26 09:40 »

Hi
For most VNA toy's isolation is the main issue , isolating the main circuit and cuplers are essential to accuracy and sensitivity.
And isolation require putting the circuit in a farady cage metal box who will increase the total cost

Al the best

Bobi
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Caaarlo
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« Reply #8 on: August 10, 2020, 11:55:25 23:55 »

Hi
For most VNA toy's isolation is the main issue , isolating the main circuit and cuplers are essential to accuracy and sensitivity.
And isolation require putting the circuit in a farady cage metal box who will increase the total cost

Al the best

Bobi

Yes, the design can get as refined as we want, a better layout, better oscillator, better mixers, a 24 bit ADC, but costs skyrocket.


Even the Nano VNA V1 is quite capable for its price using basic cheap components, and the mixers are shielded in the original version. But since the useful dynamic range is around 50dB, then this isolation can be ommited without noticeable x-talk... so for the price, it's unbeatable.





For those who would prefer a PC-based VNA that is reasonbly-priced, please check this 4 GHz VNA:
https://pocketvna.com/
Still, its software is open-source.

Nano VNA has several software tools. I am using NanoVNA SAVER that runs on Windows.

https://github.com/nanovna/nanovna-saver-v2-support

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