...and one wonders why a person might be removed from a FB group.
|
How to make nanoVNA "bulletproof" ?
Little over statement in the title , but ...
Again - started using the nanoVNA , to tune antenna, about two weeks ago and
1. it is HOT in Huston and impossible to read the display in direct sun
2. after "transmission line theory " is dutifully applied - the "portable "
miniature analyzer looses its both advantages as "miniature " and "portable".
3. it is better to keep USB connected and keep battery alive
4. after I get nanoVNA-saver to behave I won't need the display anyway
5. in future I may add "calibration switch"....
actually it is of great disadvantage
hanging on USB cable and on pretty stiff end of RG6 ( that what I have to work with ...)
I do not want fancy "enclosure " and I an not stupid to break the SMA connectors -
I need to nail the nanoVNA to the top of my desk !
...more overstatement ...
Seriously - I have what used to be antenna rotator aluminum plate , about 1/4 inch thick
I can cut to size of nanoVNA , add some " rubber feet" ...
Would that work ?
Open to ideas ... no Altoids boxes , please...
|
If you want to come back where you last were, and no memory 0, on the later firmware(s) there is an advanced option "maintain state" that will cause the device to power back on exactly as it was powered off.
toggle quoted message
Show quoted text
On June 8, 2022 3:05:36 PM CDT, Anne Ranch <anneranch2442@...> wrote: Rich, what is really puzzling - assuming that the original intent of father of "nanpXXXX" was to make money - why is internet full of
"wannabe" experts publishing and mostly copying stuff with little regards to facts?
After I par6tially read one of the "beginners guide" I did same as you did - made a copy of published document and started annotating it....
PS
As far as "SAVE" goes - I am sure I was "doing it wrong" , but after pushing "DONE" I got an option to "SAVE 0 thru 3 ".
Now if I can repeat that process every time, I'll be a happy camper...
PPS
It still looks that after cycling power - SAVE 0 is "loaded" as default....
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
|
Let me restate - I have been actively using nanoVNA for about two weeks -
and I am a certified engineer and real engineers do not read manuals...
Consequently I make mistakes , because I only read
what I IMMEDIATELY need...
With that said - I find the wast variety of "menu flowcharts " .
disgusting.
It looks as the primary goal was to cram everything in minimal space...
What happen to real (IBM) style flowcharts ?
GUI ( graphical USER interface ) Pitiful.
Any nanoVNA " coders " ever hear about "tool tips " ?
How about " document header(s) " levels?
In my years of gainful employment I did "(graphical) user experience " quality control...
(some "coders" did not like me ...)
and if anybody is going to say " what do you expect for free ..."
I AM DONE HERE
|
There are at least 2 different screen types, too, I believe. I started with a very early 2.8 inch model but just could not use it outdoors. The screen was essentially unreadable in bright light, especially sunlight (and I was working on an HF6V - in Florida).
So then I bought a -F model with IPS screen, and it works pretty well in sunlight. I have not seen the newer -4 models, though. They might have an improved LCD. Many users do seem happy with them. The -F model uses a different firmware than the others, and a slightly different, simpler method of installing the firmware.
When you order your NanoVNA, be sure to order the connector adapters that you will need with it. I have adapters for PL259, SO239, male and female BNC, and for the "F" TV connectors. Plus a BNC-to-dual-Banana jack, which is very handy for wire antennas and for measuring toroid coil properties.
--
Doug, K8RFT
|
On 2022-06-08 15:04:-0700, you wrote: SAVE also saves the enabled traces, their format and scale, etc. It's the "etc." that troubles me. Where do we find exactly what is saved for our firmware release?
|
On 2022-06-08 13:05:-0700, you wrote: Rich, what is really puzzling - assuming that the original intent of father of "nanpXXXX" was to make money - Actually, as I understand it, the NanoVNAs evolved from a hobby to merchandise. The story is prolly on the web for you to find. More to the point, now, I suppose, is how each of us can use them effectively... I try to always state which device, device model, and firmware revision I am working with... nVNA-H4 v4.3_MS, firmware 1.1 Because the various devices, models, and firmware revisions can act differently, it's important to be clear, so when I ask for help, someone who knows my device can chip in. why is internet full of "wannabe" experts publishing and mostly copying stuff with little regards to facts? This is broadly descriptive of the internet these days. We have made the image of knowledge more important than the actual knowledge. I suppose the there are those who want to give the impression that they are knowledgeable, so they copy and republish. Plagiarism is a thing of the past. Unfortunately, most of it, IMO, is a waste of bandwidth, because after the first person publishes, the copies are useless. But we have, at least in the US (though it seems a global condition), gotten to the point where we don't take the trouble to actually learn something, but rather to go through the motions. For example, I am a ham. I often have hams come to me with basic ham questions. OTOH, I wonder why they don't know the answer to questions the needed to answer to get their license. OTO, I don't really wonder. The trend today, from virtually every quarter, and here I include academia (teaching and research since the mid 90s), is to reward answers (and in academia, cheating), rather than understanding. The dean of my college once remarked to me that a student had complained about my teaching, saying "Prof M expects is to study outside of class." There are 2 things wrong there, are there not? One is that a student is so convinced of his case that he is willing to make a written complaint to the dean; the other is that this pretty much reflects the state of education in the US today. Unfortunate. I trust that none of this is a surprise to any reader in the US? See Organisation for Economic Co-operation and Development (OECD). I simply try to help those who ask questions, but I am likely to start at the beginning, and lay a foundation...teach a person to fish... It is, unfortunately, difficult to determine the facts when so many are so busy scattering myths. Onc can't simply take the word of any person or website until they have vetted them or it. More time wasted. But the nVNA crowd is actively supporting confusion. Those who actually might have concrete answers don't take the time to organize them for others. Which brings us to ... I did same as you did - made a copy of published document and started annotating it.... No quite. I started from scratch. One of the items I produced is a menu map, because the menu structure is complicated, and I need to refer to it often when I am using a feature new to me. I published the map in image form, and I published the source so that anyone can update the map for themselves when a new version is released or they just want a different presentation. It's pretty easy. Much easier than cutting and pasting menu blocks. Then I created a "user manual". I started with simply building the menu structure in hierarchical text form, and began filling in what I thought to be correct. I then expanded that to include notes as I encountered them on various lists, and I could (I hoped) verify them. I made the manual available in PDF and source, so that anyone can update it. I don't expect that to happen, because it has not happened in the past few years of evolving nVNAa. Think of me as a secretary, not as an nVNA expert. Nonetheless... We have become a nation of non-readers, for the most part. So many won't even read the manual or the menu map, I suspect. But they will post questions here. As far as "SAVE" goes - I don't know all that SAVE does. There are 2 paths for SAVE. I imagine that one stores initial settings from a cal, and the other provides a path to save a configuration that is modified in a way that does not affect the cal. For example, changing what traces are displayed with that cal. Not sure about that. See the menu map and user manual...and be sure to tell us what device, etc., you are using. It still looks that after cycling power - SAVE 0 is "loaded" as default.... True...has been that way since ... ?? And now there are ways to save and reload configs, at least on the H and H4, I think...not sure...and that will make it way easier to manage many different configurations and calibrations. ~R~
|
Re: Off subject - nanoVNA forum no longer on Facebook
#nanovna
Anne,
I suggest contacting the group owner of the Facebook group. It's possible that in the process of making the group private, they made some mistakes along the way and lost members unintentionally. You might be part of the solution and not part of the problem.
Each group is separate and stands on its own, both on Facebook and in groups.io groups. The only relationship they have is the group purpose. The group owners CAN be the same, but unlikely are the same. So you will have to deal with that group, not any other group. Hopefully you will learn what happened at the very least.
Donald KX8K
toggle quoted message
Show quoted text
On Wed, Jun 8, 2022 at 10:47 AM, Anne Ranch wrote:
he purpose of this post to help ME to make heads or tails from nanoVNA forum
disappearance from Facebook.
It is no longer listed in my "groups" and Mrs Google posts a cryptic message
to the effect that
" the group owner changed the accessibility of the forum"
|
SAVE also saves the enabled traces, their format and scale, etc.
So you can set the frequency range, number of points, traces, markers,
etc., then calibrate and save, and when you recall that slot you get the
full setup.
toggle quoted message
Show quoted text
On Wed, Jun 8, 2022 at 2:17 PM Perry Westberry <perrywespa@...> wrote: Anne,
My knowledge and experience is limited, but SAVE 0 is loaded at power up
each time. This is a good place to save the calibration data for the setup
you use most often. Anything else you want to save, including a different
calibration, goes into one of the other SAVE locations and can be loaded
using the RECALL function. Hope this helps.
Perry
KG4KTB
On Wed, Jun 8, 2022 at 4:05 PM Anne Ranch <anneranch2442@...> wrote:
Rich, what is really puzzling - assuming that the original intent of
father of "nanpXXXX" was to make money - why is internet full of
"wannabe" experts publishing and mostly copying stuff with little
regards to facts?
After I par6tially read one of the "beginners guide" I did same as you
did - made a copy of published document and started annotating it....
PS
As far as "SAVE" goes - I am sure I was "doing it wrong" , but after
pushing "DONE" I got an option to "SAVE 0 thru 3 ".
Now if I can repeat that process every time, I'll be a happy camper...
PPS
It still looks that after cycling power - SAVE 0 is "loaded" as
default....
|
Anne,
My knowledge and experience is limited, but SAVE 0 is loaded at power up
each time. This is a good place to save the calibration data for the setup
you use most often. Anything else you want to save, including a different
calibration, goes into one of the other SAVE locations and can be loaded
using the RECALL function. Hope this helps.
Perry
KG4KTB
toggle quoted message
Show quoted text
On Wed, Jun 8, 2022 at 4:05 PM Anne Ranch <anneranch2442@...> wrote: Rich, what is really puzzling - assuming that the original intent of
father of "nanpXXXX" was to make money - why is internet full of
"wannabe" experts publishing and mostly copying stuff with little
regards to facts?
After I par6tially read one of the "beginners guide" I did same as you
did - made a copy of published document and started annotating it....
PS
As far as "SAVE" goes - I am sure I was "doing it wrong" , but after
pushing "DONE" I got an option to "SAVE 0 thru 3 ".
Now if I can repeat that process every time, I'll be a happy camper...
PPS
It still looks that after cycling power - SAVE 0 is "loaded" as
default....
|
Re: Off subject - nanoVNA forum no longer on Facebook
#nanovna
If you were subscribed to it, you should stolii see its name in your subscribed groups, even if you can¡¯t access it.
toggle quoted message
Show quoted text
On Jun 8, 2022, at 14:08, Anne Ranch <anneranch2442@...> wrote:
?if I cannot access the forum - how am I supposed to know what is its name ??
|
Rich, what is really puzzling - assuming that the original intent of father of "nanpXXXX" was to make money - why is internet full of
"wannabe" experts publishing and mostly copying stuff with little regards to facts?
After I par6tially read one of the "beginners guide" I did same as you did - made a copy of published document and started annotating it....
PS
As far as "SAVE" goes - I am sure I was "doing it wrong" , but after pushing "DONE" I got an option to "SAVE 0 thru 3 ".
Now if I can repeat that process every time, I'll be a happy camper...
PPS
It still looks that after cycling power - SAVE 0 is "loaded" as default....
|
Re: #firmware NanoVNA SAA-2N firmware not loading
#firmware
Id you can get dfu mode, then go into dfu mode and reload it.
toggle quoted message
Show quoted text
On June 8, 2022 2:07:51 PM CDT, Robert Coleman <rcoleman@...> wrote: Although this discussion is a bit old I thought I'd give it a try, mostly because my SAA-2N has the same page on Config view, 20200617 and 1a9a11d. While trying unsuccessfully to update the firmware, as I moved the usb plug from Win 10 machine to iOS machine, the screen went white and has not returned. Does this sound familiar? I've tried every combination of screen taps, button pushes, on-off switch and cannot get back to any normal page. I opened up the case to see if the screen ribbon connector has come loose again but it was fine. No components seemed fried, looked like new. Is there a reset button or procedure that anyone knows about? Yes, it is clone but a highly recommended one - I hope I didn't fry it! tnks!
72/73 de k1qed, bob.c qrp 4evr
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
|
Re: #firmware NanoVNA SAA-2N firmware not loading
#firmware
Although this discussion is a bit old I thought I'd give it a try, mostly because my SAA-2N has the same page on Config view, 20200617 and 1a9a11d. While trying unsuccessfully to update the firmware, as I moved the usb plug from Win 10 machine to iOS machine, the screen went white and has not returned. Does this sound familiar? I've tried every combination of screen taps, button pushes, on-off switch and cannot get back to any normal page. I opened up the case to see if the screen ribbon connector has come loose again but it was fine. No components seemed fried, looked like new. Is there a reset button or procedure that anyone knows about? Yes, it is clone but a highly recommended one - I hope I didn't fry it! tnks!
72/73 de k1qed, bob.c qrp 4evr
|
Re: Off subject - nanoVNA forum no longer on Facebook
#nanovna
Anne, since there appear to be several Facebook (FB) groups related to nanovnas, it is impossible, for me at least, to know which FB group you are, or were, using.
The is no direct relationship between FB group owners and groups.io group owners unless the same person happened to create one on each.
I am not a regular user of FB, so I can¡¯t speculate what may have happened to the FB group that you were using. I have sent a PM to the other co-owner of the nanovna-users GIO group asking if he knows anything more than I do about this.
DaveD, co-owner
toggle quoted message
Show quoted text
On Jun 8, 2022, at 10:48, Anne Ranch <anneranch2442@...> wrote:
?The purpose of this post to help ME to make heads or tails from nanoVNA forum disappearance from Facebook.
It is no longer listed in my "groups" and Mrs Google posts a cryptic message to the effect that
" the group owner changed the accessibility of the forum" ( not a direct quote )
Since there are few "nanoVNA" forum I cannot really say any more about this one, but I had a discussion
going and subsequently cannot finish it.
I suspect that I may have posted something the owner did not like....
Would appreciate any feedback or just ignore this post.
|
The following files and folders have been uploaded to the Files area of the [email protected] group. * /user manual and menu maps/nVNA-H4 v4.3_MS, firmware 1.1 User Manual 0102.zip ( /g/nanovna-users/files/user%20manual%20and%20menu%20maps/nVNA-H4%20v4.3_MS,%20firmware%201.1%20User%20Manual%200102.zip ) *By:* Rich NE1EE <TheDustyKey@...> *Description:* nVNA-H4 v4.3_MS, firmware 1.1, User Manual 0102. includes more operational notes. Word and PDF. --- The following files and folders have been deleted from the Files area of the [email protected] group. * /user manual and menu maps/nVNA-H4 v4.3_MS, firmware 1.1, User Manual 0100.zip *By:* Rich NE1EE <TheDustyKey@...>
|
On 2022-06-08 08:00:-0700, you wrote: if the menu said "SAVE " and there are no options one
is left with " try this and watch for smoke..."
PS Is there a WRITTEN document of "nanoVNA MENU dictionary "? I am in complete empathy with what I understand you to write. I was disheartened that so much time has passed with these devices on the market, and so little written by those who purport to be in the know. A newcomer to the scene, I wrote a user manual of sorts, researching as I went, and created a map map for both the -H and -H4 nVNAs. My intention was none other than to help other folks new to the devices, and to provide a formal way of writing down my notes, so that others might contribute in an orderly fashion. The docs are to be found in the Files area of this forum. I will periodically update them, but nVNAs are not my main interest, so I won't be learning all that is needed to complete the task. There are significant differences twixt some versions, so the manual and menu maps are specific to a device and firmware version. ~R~ 72/73 de Rich NE1EE The Dusty Key On the banks of the Piscataqua
|
Re: The T-Check confusion
Thanks Jim!
Op di 7 jun. 2022 om 22:16 schreef Jim Lux <jim@...>:
toggle quoted message
Show quoted text
On 6/7/22 1:14 PM, Jim Lux wrote:
On 6/7/22 10:30 AM, Victor Reijs wrote:
In the meantime I found a document:
<I got a warning the document might hve issues, but downloading it
gave no
problems...>
Any other source is still welcome.
Op di 7 jun. 2022 om 18:28 schreef Victor Reijs via groups.io
<pe1atn.victor.reijs@...>:
Hello Kurt,
Do you have a definition of this 10/12 term correction method? I am
interested in understanding it. Thanks.
All the best,
Victor
"Network Analyzer Errro Models and Calibration Methods" by Doug
Rytting of Agilent (at the time))
In general search for VNA and Rytting - he did a lot of presentations
over the years at various levels of rigor.
|
Re: The T-Check confusion
On 6/7/22 1:14 PM, Jim Lux wrote: On 6/7/22 10:30 AM, Victor Reijs wrote:
In the meantime I found a document:
<I got a warning the document might hve issues, but downloading it gave no
problems...>
Any other source is still welcome.
Op di 7 jun. 2022 om 18:28 schreef Victor Reijs via groups.io
<pe1atn.victor.reijs@...>:
Hello Kurt,
Do you have a definition of this 10/12 term correction method? I am
interested in understanding it. Thanks.
All the best,
Victor
"Network Analyzer Errro Models and Calibration Methods" by Doug Rytting of Agilent (at the time)) In general search for VNA and Rytting - he did a lot of presentations over the years at various levels of rigor.
|
Re: The T-Check confusion
On 6/7/22 10:30 AM, Victor Reijs wrote: In the meantime I found a document:
<I got a warning the document might hve issues, but downloading it gave no
problems...>
Any other source is still welcome.
Op di 7 jun. 2022 om 18:28 schreef Victor Reijs via groups.io
<pe1atn.victor.reijs@...>:
Hello Kurt,
Do you have a definition of this 10/12 term correction method? I am
interested in understanding it. Thanks.
All the best,
Victor
"Network Analyzer Errro Models and Calibration Methods" by Doug Rytting of Agilent (at the time))
|
Larry McElhiney
Rich NE1EE