NanoVNA-F V3 Review/Teardown, Compared to V2

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In this video, I did a review an teardown of a NanoVNA-F V3, an upgraded version from the original V2. The V3 supports up to 6.3 GHz and comes with significant performance improvement. Product link: ban.ggood.vip/141P0
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Teardown pictures:www.kerrywong.com/2023/09/01/t...
NanoVNF-F V2 review: • Review, Experiments an...
00:00 Overview
03:52 Comparison between V3 and V2
06:51 Single band whip antenna measurement
09:56 Multi-band whip antenna measurement
11:24 600-6GHz wideband MIMO antenna measurement
13:52 RC filter measurement
14:42 TDR cable length measurement
15:56 Signal generator output spectrum, compared to V2
17:44 Teardown, conclusions

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Опубликовано:

6 июн 2024

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Комментарии : 59

@dondonaldson1684 5 месяцев назад

Thanks Kerry, excellent presentation.

@n1vca 3 месяца назад

Brilliant review - thank you very much - it answeres every question I have had

@wiwingmargahayu6831 9 месяцев назад

your telco engineering skill is amazing Sir

@jspencerg 9 месяцев назад

I appreciate your consistently thorough reviews. I'm considering getting vna with a higher frequency range than my v2plus4. I see I should consider this model in addition to the litevna. Could you do more comparison between this and the litevna?

@rickfletcher4297 3 месяца назад

Excellent review and presentation! I've placed an order for one.

@AlexanderBukh 9 месяцев назад

Thank you, so informative.

@WR3ND 7 месяцев назад

Great video. Thanks.

@electronics.unmessed 25 дней назад

Very good! Thx for sharing.

@jankromka9584 9 месяцев назад

Thank you Kerry.👍

@fernandorosa9850 9 месяцев назад

Excelent video!. Could you made a comparision with liteVNA 64?.

@craigrotay3732 9 месяцев назад

Hi Kerry! Thank you for getting the V3 so fast and producing another informative comparison. For the spectrum analysis, the output power for the V3 seemed to be set about 6dB higher than the V2 at 1GHz, and close to 10dB at 4.1. If you run the V3 at lower power, does it look a little cleaner? Or is the analyzer getting hit too hard (probably not...) Kind of surprised about the V3 spectrum, but still it's amazing for a low cost VNA.

@KerryWongBlog 9 месяцев назад

I am a little surprised by the V3 spectrum as well. The spectrum looks similar at different power settings. It is slight better towards lower frequencies but in general the phase noise is more pronounced than V2.

@craigrotay3732 9 месяцев назад

@KerryWongBlog Great information Kerry. Thank you. I knew you probably checked this aspect thoroughly since it's so unexpected. I suppose one good thing is that its output power seems to be a bit higher than the V2. Do you suppose there is a fix?

@KerryWongBlog 9 месяцев назад

@@craigrotay3732I was a little puzzled by the phase noise as the phase noise of MAX2780 is pretty low. Unfortunately, the software used in the NanoVNA-F is not open source so it would be hard to pinpoint where the issue lies.

@joseppuig925 9 месяцев назад

Probably they didn't implement the MAX2780 correctly (loop filter component values, for instance), or they are not sending the correct configuration for its internal registers, hence, the bad phase noise.

@gonzoruiz7154 4 месяца назад

Hello, thank you for the video which is very interesting. I have the F V3 broken and I'm looking for the schematic and I can't find it, if you know where could I find it? Thanks a lot.

@mamatabb4465 Месяц назад

Hello! Thanks for the video, I have same unit. I’m wondering if you can make a video on how to test a coax cable? Thank you

@se2702 6 месяцев назад

Return loss (RL) measurements are positive (+) for passive devices. If a negative sign is indicated (-) the measurement is really reflection coefficient characterized in dB.

@robust5615 5 месяцев назад

do the position of antenna ..horizontal or vertical will effect its performance ?

@ernestb.2377 5 месяцев назад

Hi, would you know how these V2 and V3 roughly compare to H4? There are a lot lot of types, versions and producers these days...

@argasasrgetthe9032 29 дней назад

You mentioned at 3:08 there was a firmware update available for the V2 to increase its frequency range to 4.4ghz. Is that an official update anyone can get? And is it even any good at lets say 3.5ghz? Nice review Love your Video's!

@felixquehl 20 дней назад

Could you do a video about the firmware?

@Chris-hy6jy 8 месяцев назад

Have you seen the SV4401A or SV6301A? Not sure if these are just a larger screen version of the nanovna or whether they have better performance. Would be good to see a review by you!

@KerryWongBlog 8 месяцев назад

Good timing! I just got an SV6301A and will review it shortly.

@Chris-hy6jy 8 месяцев назад

@@KerryWongBlog oh fantastic! Thanks 😂

@amirb715 9 месяцев назад

@4:20 I dont see any BW on the screen but in all VNA's higher BW >> faster sweep. That's not surprising. That's how it should be. TO compare the sweep speed you need to make sure they have the same IF bandwidth. It is very similar to RBW in SA

@KerryWongBlog 9 месяцев назад

I don't think adjusting bandwidth is an option on the NanoVNA-F V2 or V3 I know NanoVNA V2 Plus4 supports it, but didn't see it on -F V2 or V3. I will comb through the settings again when I get a chance, but if you find the settings please let me know.

@gino.avanzini 9 месяцев назад

great video! How does it compare with the liteVNA?

@KerryWongBlog 9 месяцев назад

It's a lot faster for sure. I haven't done any deeper analysis yet but the noise floor of V3 is lower especially in higher frequency ranges.

@gino.avanzini 9 месяцев назад

@@KerryWongBlog thank you!

@ernieschatz3783 Месяц назад

I wonder why the signal quality of the SigGen took such a step backwards.

@Chris-hy6jy 8 месяцев назад

Hopefully they'll release a v4 with a better signal generator. A sine wave generator would be nice 😉

@pchunter168 9 месяцев назад

👍

@fushizhang6864 8 месяцев назад

Does the interface allow the lowest freq from 9khz?

@KerryWongBlog 8 месяцев назад

No, the V3 starts from 1 MHz.

@worroSfOretsevraH 9 месяцев назад

I'm wondering for how long will the center pin last of those connectors with all the screwing-unscrewing done.

@madmax2069 9 месяцев назад

Yeah, SMAs are pretty fragile, you would have though they would have used a more robust connector.

@vincei4252 9 месяцев назад

I just checked quality TE female SMA on DigKey and they list 500 cycles. Some are much, much worse i.e. fewer cycles. Better to have some sacrificial cables attached I suppose. I never understand instrumentation that could be used heavily having SMA connectors TBH.

@madmax2069 9 месяцев назад

@@vincei4252 I'm more partial to using a solid adapter instead of an adapter cable that way you still keep the plugging and unplugging cycles to a minimum on the connector on the unit. With a solid adapter you don't have to worry about the cable being just another point of failure, but there again the cable can also keep forces from directly effecting the connector on the unit.

@Gengh13 9 месяцев назад

It is pretty easy to replace when they fail.

@madmax2069 9 месяцев назад

@@Gengh13 to some it's easy, to some they see using chewing gum to stick two spoons together as hard.

@snakezdewiggle6084 9 месяцев назад

The reflective display will drive you insane. , ;)

@user-lo8gq3pr6e 9 месяцев назад

So if its built-in signal generator has harmonics at -35dB from the signal, then this means the accuracy of network measurements below -35dB cannot be trusted. This would affect all S-measurements.

@uploadJ 7 месяцев назад

Not if they do a hetereodyne conversion before detection. A simple broadband detector diode of course "sees all". But a detector diode is a scalar analyzer, not a vector (phase information) analyzer.

@anlpereira 4 месяца назад

I'm dreaming with just a V2 version to measure PCB antenna of my ESP32 projects. 🙃

@uni-byte 5 месяцев назад

Wow!!! that SA is noisy! Nice review.

@Aimsport-video 9 месяцев назад

“Better spec’d and more capable components” that deliver inferior signal quality. Hmmmm.

@user-lo8gq3pr6e 9 месяцев назад

Yeah, big concerns with the accuracy of measurements because of a noisy incident signal gen.

@JuulCPH 7 месяцев назад

You really shouldn't be promoting products like this. This is using the NanoVNA name but they almost certainly do not have permission from ttrftech who developed and marketed the original NanoVNA. Even worse (in my opinion) the firmware source code seems to not be available even though it seems very likely that it is based on the original NanoVNA firrmware by ttrftech which is licensed under the GPLv3. So not just a trademark violation but a GPL license violation as well. Copying and improving open designs is good but pretending to be the original creator by using the same name and then not sharing back the improvements made to the open source firmware is not just unethical. It's illegal. You're promoting what is almost certainly an illegal product.

@robust5615 5 месяцев назад

it is open source or no ?