Hello

* I have seen reference to the PRO but I can't see it for sale on the official Tindie site? Is there a link to buy it?
* Is there a performance or speed difference which makes the PRO version better? I only need to measure below 1GHz, and good low frequency performance is a plus.

Thanks

Hi, yes, you can find the option on the product listing here: https://www.tindie.com/products/hcxqsgroup/nanovna-v2-plus4/
The main difference is the adjustable IF filter which allows narrowband devices to be measured, and allows you to adjust the noise vs speed tradeoff.
Thanks

Good god they’ve risen in price ,dare I say rocketed

On Wed, 21 Aug 2024 at 08:15, nanov2support via groups.io <edelswartz123=
gmail.com@groups.io> wrote:

> Hi, yes, you can find the option on the product listing here:
> https://www.tindie.com/products/hcxqsgroup/nanovna-v2-plus4/
> The main difference is the adjustable IF filter which allows narrowband
> devices to be measured, and allows you to adjust the noise vs speed
> tradeoff.
> Thanks
>
>
>

I am a new HAM and trying to decide between a Nano VNA and a rig expert.  In my amateur extra classes we talked Smith charts and other representations but I don't yet fully understand what all of it means.  I am trying to figure out if the pro is worth 150.00 more than the v4.  Primarily it will be used for SWR, can you expand a bit on specific narrowband devices or in that case are we talking 80m and above.  Also, can you explain a bit why I am adjusting the noise and speed tradeoff.  I am running LMR 400 or RG 58 coax to either a big kansas coil or buddipole antenna for the time being.
--
Andrew
N0MFQ
~73

Andrew.

I have both the RigExpert and nanoVNA. The VNA is a more complicated
laboratory type instrument well suited for measuring passive, two port
devices, such as filters, attenuators, lengths of cable, and active devices
such as small amplifiers. It can also measure one-port devices and
antennas, but with care.

The Rig Expert is a one-port instrument optimized specifically for antenna
measurements. It is much more rugged and easier to use. Less subject to
damage from static. Can be used with one hand only (useful when climbing a
tower).

Both can be connected to and controlled by a computer for data storage and
printing.

The RigExpert is well built and, in my opinion, well worth the price.
Also, made in the Ukraine. The nanoVNA is made in China. The nano is a
great learning tool but advanced. Before the nanoVNA, Instruments like
this cost tens of thousands of dollars.


On Fri, Sep 13, 2024 at 12:00 AM Andrew Pollart via groups.io
<andrew.pollart=comcast.net@groups.io> wrote:

> I am a new HAM and trying to decide between a Nano VNA and a rig expert.
> In my amateur extra classes we talked Smith charts and other
> representations but I don't yet fully understand what all of it means. I
> am trying to figure out if the pro is worth 150.00 more than the v4.
> Primarily it will be used for SWR, can you expand a bit on specific
> narrowband devices or in that case are we talking 80m and above. Also, can
> you explain a bit why I am adjusting the noise and speed tradeoff. I am
> running LMR 400 or RG 58 coax to either a big kansas coil or buddipole
> antenna for the time being.
> --
> Andrew
> N0MFQ
> ~73
>
>
>

The VNAs are susceptible to damage when connected to an antenna due to static discharge. There have been a number of articles addressing this issue on this site. Since you are intending to use the device to measure SWR, I would go with a rig expert or other device designed to measure the SWR of antennas. Your goal is to get the SWR down to 1:1. The closer the better. Your transmitter likes 1:1.



The noise and speed tradeoff relates to the VNA. If you go with the rig expert or equivalent, this should not be an issue.



LMR 400 and RG-58 are for low power operation. As long as you are 100 watts or less, you should have no problem.



When you tune your antenna, tune it at the base of the antenna. Your body presence may affect the SWR so you might want to take that into account.



Welcome to the world of ham radio.



Richard

AC0IG

Yes it is.  I ordered one and it arrived in less than a week.  See https://www.tindie.com/products/hcxqsgroup/nanovna-v2-plus4/.  Beware of clones.  It works well and I paid the extra $100 for the PRO version (not $150).  I have not had time to compare it to my labortory VNA at the university, but doing basic testing yielded good results.

They also offer for more money the ** VNA6000 *6GHz* Portable Vector Network Analyzer ( https://www.tindie.com/products/hcxqsgroup/nanorfe-vna6000/ and

---------------------------------------------------------------------------------------------
https://nanorfe.com/vna6000.html which proves a nice comparison chart of the various models).
---------------------------------------------------------------------------------------------

73m
Barry W4WB

what frequency range do you need?? 3ghz? 6ghz?

rig expert or a nanovna v2 are two different things (i prefer the v2 or
any of its clones)

dg9bfc sigi

Am 13.09.2024 um 00:05 schrieb Andrew Pollart via groups.io:

> I am a new HAM and trying to decide between a Nano VNA and a rig
> expert.  In my amateur extra classes we talked Smith charts and other
> representations but I don't yet fully understand what all of it
> means.  I am trying to figure out if the pro is worth 150.00 more than
> the v4.  Primarily it will be used for SWR, can you expand a bit on
> specific narrowband devices or in that case are we talking 80m and
> above.  Also, can you explain a bit why I am adjusting the noise and
> speed tradeoff.  I am running LMR 400 or RG 58 coax to either a big
> kansas coil or buddipole antenna for the time being.
> --
> Andrew
> N0MFQ
> ~73
>

Has anyone tried using a small pad (1 to 3 db) when measuring antennas? If you calibrate out the pad, you should get good results, and somewhat immune to static. I used that method at work on a FieldFox for tuning duplexers

Frank

rahoelz wrote:


> Your goal is to get the SWR down to 1:1. The closer the better.


The focus on 1:1 "perfect" SWR is misplaced.

You want to:
* keep the transmitter happy (and linear)
* balance feedline losses with convenience (< 50', don't worry about it)
* get on the air and have fun

General, anything under 2:1 is absolutely fine for almost all solid state
amplifiers.


LMR 400 [is] for low power operation.


Not at all. LMR-400 datasheet snip:

[image: image.png]

73 de AI6KG

On Fri, Sep 13, 2024 at 9:03 PM rahoelz via groups.io <rahoelz=
imonmail.com@groups.io> wrote:

> The VNAs are susceptible to damage when connected to an antenna due to
> static discharge. There have been a number of articles addressing this
> issue on this site. Since you are intending to use the device to measure
> SWR, I would go with a rig expert or other device designed to measure the
> SWR of antennas. Your goal is to get the SWR down to 1:1. The closer the
> better. Your transmitter likes 1:1.
>
>
>
> The noise and speed tradeoff relates to the VNA. If you go with the rig
> expert or equivalent, this should not be an issue.
>
>
>
> LMR 400 and RG-58 are for low power operation. As long as you are 100
> watts or less, you should have no problem.
>
>
>
> When you tune your antenna, tune it at the base of the antenna. Your body
> presence may affect the SWR so you might want to take that into account.
>
>
>
> Welcome to the world of ham radio.
>
>
>
> Richard
>
> AC0IG
>
>
>
> *From:* NanoVNAV2@groups.io <NanoVNAV2@groups.io> *On Behalf Of *Andrew
> Pollart via groups.io
> *Sent:* Thursday, September 12, 2024 5:05 PM
> *To:* NanoVNAV2@groups.io
> *Subject:* Re: [nanovnav2] Is the NanoVNA V2 Plus4 PRO available to buy?
>
>
>
> I am a new HAM and trying to decide between a Nano VNA and a rig expert.
> In my amateur extra classes we talked Smith charts and other
> representations but I don't yet fully understand what all of it means. I
> am trying to figure out if the pro is worth 150.00 more than the v4.
> Primarily it will be used for SWR, can you expand a bit on specific
> narrowband devices or in that case are we talking 80m and above. Also, can
> you explain a bit why I am adjusting the noise and speed tradeoff. I am
> running LMR 400 or RG 58 coax to either a big kansas coil or buddipole
> antenna for the time being.
>
> --
>
> Andrew
>
> N0MFQ
>
> ~73
>
>
>
>