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Re: Inflation of this forum
Dr. David Kirkby from Kirkby Microwave Ltd
On Tue, 8 Oct 2019 at 10:08, Bo, OZ2M <groups.io@...> wrote: Hi
I all for using hashtags. A group on groups.io can be set to require
hashtags and also that only the owner and moderators can create hashtags.
The latter might be a good idea too. Does that mean that users would need to use the groups.io website, and be unable to post from an email client? If so, I would stop posting anything. I fully agree that the traffic is too high. I wrote last month that this group had more posts than any other I would have to start muting topics. The Keysight VNA forums are nowhere near as active as this one, but they have five subgroups * General Use * Applications * Programming and remote control * Calibration and Error Correction. * Handheld Instruments Obviously such subgroups would not be appropriate here - in particular ¡°Handheld Instruments¡±. *I have no experience of groups.io <> subgroups*, but if subgroups were a suitable way forward, I would suggest the following, based on my experience of the Keysight VNA group and here. *1) Beginners* I suggest this because I believe any new owners, especially if they have never used a VNA before, who are going to get overwhelmed by discussion of firmware changes, NanoVNA-Saver, the mathematics of measurement uncertainties etc. *2) Firmware development* *3 Programming and remote control* - for software like NanoVNA-Sharp, *4) Advanced applications* *& technical discussion * *5) Calibration and error correction* *6) General Use*. Dave -- Dr. David Kirkby, Kirkby Microwave Ltd, drkirkby@... Telephone 01621-680100./ +44 1621 680100 Registered in England & Wales, company number 08914892. Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Chelmsford, Essex, CM3 6DT, United Kingdom
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Re: NanoVNA parallel R measurement
thanks, this is all helpful. I found through a few different evaluations of the info I was getting, a range of R, that got me in the ballpark and made tuning the circuit fairly painless (if anyone considers desoldering and resoldering 0603 smt's painless). I'm hoping to measure the total Q of the network and antenna now, using the nano, is this basically done setting logmag display on channel 1, hooking up the matched network and antenna to channel 1, and putting a small coil on channel 2, putting them in proximity and measuring the falloff rate of channel 1 from the maximum amplitude?
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I just released 0.1.1:
This version adds a first version of an analysis mode, which will analyse
low-pass, high-pass and band-pass filters for you. Give it a go, and tell
me how it fails ;-)
Also added is easy sweeping of bands (selectable within Sweep settings),
unwrapping of the phase chart, floating point min/max values for data for
charts, and deleting of calibration standard sets.
The release also includes a display option allowing you to select whether
Return Loss should be presented as a positive or negative value.
This version should behave better with multi-segment sweeps using NanoVNA
firmware 0.2.2. It's slower, though. I suggest users upgrade to 0.2.3, and
the next version of NanoVNA-Saver will start using the "scan" command added
in edy555's firmware to get around these issues.
This version should work with NanoVNA-F, though I have had no way to test
it - I look forward to hearing if it does.
I thank the testers who have been quick, found several bugs that I have
managed to fix, and who have come up with a whole list of items that got
added to the backlog!
As ever, I look forward to hearing your feedback! Please be gentle ;-)
Enjoy,
--
Rune / 5Q5R
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Re: Another modified nanoVNA software
For those who may be don't know, my software mod can be found here:
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broadbanding my W3DZZ on 80m
Hi,
this is not really new, but very helpful for 80m DX:
I had a W3DZZ that had a sharp response in the center of the (EU) 80m Band.
But CW or SSB DX is at the band ends.
Before (blue curve) the W3 was only doing a reasonabl job near resonance at
center.
Thanks to SimSmith freeware I could determine the optimum coax length and
use an appropriate L and C to flatten the frequency response.
See both, before (measured with my Rigexpert AA-600) and after (measuered
with NanoVNA)
frequency sweep responses as displayed by NanoVNA-saver's:
(I wish, NanoVNA saver could show SWR circles, too.)
For more info on broadbanding (including the Smith Chart basics) see this
excellent Link:
enjoy,
73, Hans
DJ7BA
--
Diese E-Mail wurde von Avast Antivirus-Software auf Viren gepr¨¹ft.
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Re: Inflation of this forum
Hi I all for using hashtags. A group on groups.io can be set to require hashtags and also that only the owner and moderators can create hashtags. The latter might be a good idea too. /g/nanovna-users/settings | Message Policies | Hashtags Required and Hashtag Permissions (only visible to owner) Unlike accounts on e.g. Yahoo! Groups, an account on groups.io can have a group specific profile: /g/nanovna-users/editprofileand also two different group specific standard signatures (web posting and email posting): /g/nanovna-users/editsubThus no need to have same group profile on your NanoVNA account and your local Swinger Club. Bo
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Re: Inflation of this forum
That's why I configure 'no-email'. Now I am using web browser only.
But... I can not BLOCK anymore self promoting 9+ line signature salesman. sigh...
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Re: Inflation of this forum
When there's too much traffic from a group I switch to a daily digest. I then only read the messages from the groups.io website. Although I may miss something useful I don't have to wade through unwanted traffic in my email inbox.
--
73
Richard
G4TGJ
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Unwanted duplicate e-mails (was: Re: [nanovna-users] info update)
From: Roy Appleton
So that's what's going on. From the email readers point of view it's a mess!
Roy
WA0YMH
========================================
100% agreed, Roy! An unnecessary duplication, and a proliferation of e-mails.
Dave: there is a group setting which disables users from editing their messages and would prevent these unwanted multiple e-mails.
73,
David GM8ARV
--
SatSignal Software - Quality software for you
Web:
Email: david-taylor@...
Twitter: @gm8arv
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Re: Inductor S21 measurement using nanoVNA
Thank you John for answering/addressing my question. Tried an air cored inductor, and the S21 attenuation was increasing almost linearly with frequency 1-300 MHz. So, as you said the the ferrite core is the reason behind this flat loss response.
I guess this means that I can use this inductor around FT23-43 effectively as an RF choke near Vcc with a bypass cap to ground for this frequency range which was the reason behind this test.
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Re: Another push button mod
Looks like it to me! Just double the price but you can get them in 3 days
not 3 or 4 weeks! ?
Roy
WA0YMH
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On Mon, Oct 7, 2019, 8:19 PM David Colburn <dcolburn@...> wrote: Is this the same switch assortment?
Thanks,
kd4e
On 10/4/19 11:17 AM, Shirley Dulcey KE1L wrote: If you ever bought > one of the popular starter kits for microcontrollers like Arduino,
it > probably contains some suitable switches. > > I bought a bag of
assorted varieties of these switches from Banggood > so I could try out
the various form factors, especially the length of > the button: >
> In that assortment they are about 3 cents per switch. If you need a >
bunch of a single type, you can buy bigger bags of them and they are >
even cheaper.
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Re: NanoVNA firmware extended to 1500MHz with added scan command
Using the twitter web page you can do the translating, never used the
app, as this social media is too addictive to put on my cell phone ;-)
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Le lun. 7 oct. 2019 ¨¤ 18:55, hwalker <herbwalker2476@...> a ¨¦crit :
On Mon, Oct 7, 2019 at 03:38 PM, Pierre Martel wrote:
Yes twitter does use google translate.
---------------------------------------------------------------------------------------------
Pierre,
Must be a setting I'm missing. I have yet to locate the translate feature from inside the Twitter app.
Herb
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Re: Another push button mod
Is this the same switch assortment? Thanks, kd4e On 10/4/19 11:17 AM, Shirley Dulcey KE1L wrote: If you ever bought > one of the popular starter kits for microcontrollers like Arduino, it > probably contains some suitable switches. > > I bought a bag of assorted varieties of these switches from Banggood > so I could try out the various form factors, especially the length of > the button: > In that assortment they are about 3 cents per switch. If you need a > bunch of a single type, you can buy bigger bags of them and they are > even cheaper.
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So that's what's going on. From the email readers point of view it's a mess!
Roy
WA0YMH
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On Mon, Oct 7, 2019, 3:07 PM Pierre Martel <petem001@...> wrote: Hi Larry and in3elx.
Larry he is not repeating himself he is editing his post. But he is
doing it with the web interface of the group.
You on the other side are using the email fonction of the group and
every time in3elx edit his post you receive a new email of his edited
post.
That is why you see [Edited Message Follows] into his messages.
hope this helps.
Le lun. 7 oct. 2019 ¨¤ 15:09, <in3elx@...> a ¨¦crit :
On Mon, Oct 7, 2019 at 07:24 PM, Larry Rothman wrote:
Please stop repeating yourself in the forum - it is very poor
etiquette.
You also appear to be the only one with this issue.
Please verify you are following all the various guides that are
available
here.
Read, then read some more, then google for nanovna on other websites
where
users have created pages about the device.
On Monday, October 7, 2019, 2:16:39 p.m. GMT-4, <in3elx@...>
wrote:
[Edited Message Follows]
I can't communicate with the developers.
I don't repeating anything.
What problem I do you create? Is this your etiquette/ham spirit?
This is a forum, those who want to help help me maybe they will, those
who don't want to help me can read other things.
Good night. Thanks again.
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Re: NanoVNA firmware extended to 1500MHz with added scan command
Thanks again Larry. As usual, Google Translate still has a long way to go. I lot of activity of interest to me has come out of Japan and China the past few years and I'm considering learning to read both languages. The Spanish I took in college has only been of use at the local taqueria.
Herb
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Re: NanoVNA firmware extended to 1500MHz with added scan command
Herb,
Here's what? the Japanese translates to:
Conversation
Abnormal person@kakuiwataBy the way, the model that is the base of the remodeling is a white model without a shield plate, which is said to be bad for the world and is sold the cheapest. It is unlikely that no shield plate will limit high-frequency performance. #nanoVNAQuote TweetAbnormal person@kakuiwata ¡¤ 9hMeasure 1090MHz SAW BPF with the modified #nanoVNA . If the frequency is low even at the 5th harmonic, it has reached a practical level. When this becomes 1350MHz, the feeling of difficulty increases at a stretch.7:04 PM ¡¤ Oct 7, 2019 ¡¤ TwitPanePlus
On Mon, 7 Oct 2019 at 6:44 PM, hwalker<herbwalker2476@...> wrote: Thanks for the analysis Larry.? I thought the modification would pique your interest. I was wondering what was going on with the port 0 coax cable replacement.? Since photos were provided for 1090 MHz and 1350 MHz I was hoping the modification was wideband but the tuned length idea makes sense.? Hopefully a full write-up will follow from the member. I thought the separate power source was for lower noise.? If it is for higher voltage that would make it difficult to incorporate on board without using a step up switching regulator.
Regards,
Herb
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Re: Inflation of this forum
Hello - thank you for acknowledging start of this group (I started it in June 2019 having been an early adopter of nanovna, and have been pleased with the growth and extraordinarily high signal-to-noise ratio that the group's members have maintained - excellent!)
I wish to specifically thank KC0WJN (Dave as well) who has been serving as co-owner and been an experienced, invaluable guide as the group has grown.
I am aware that the traffic level is high relative to some other groups, and some structural proposals have been floated from time to time.
I have the following recommendations:
1. If you get single-message delivery and feel the traffic level is high, I urge you to consider using digest mode. You should receive 3-4 e-mails per day, and within these the messages are threaded.
2. The group's traffic is inherently not perfectly organized - there *will* be some duplication, threads that change mid-stream, and so on. This is OK and good - when you see duplication and feel it's important, quoting URL of a previous relevant thread will help those that are currently participating, as well as those that happen onto the archives in the future.
3. Consider trying the groups.io web interface if you're not currently using it (you can use the web interface alongside your e-mail client - that's what I do). Consider searching for topics of interest. Save or bookmark e-mails of particular interest.
Thank you again for your participation in nanovna-users - keep contributing, keep learning, keep the signal-to-noise ratio high, and remember that nanovna and this group have helped bring capable RF vector network analysis solutions become accessible in ways not previously experienced.
73 Dave WB0GAZ
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Re: NanoVNA firmware extended to 1500MHz with added scan command
A number of posts back, regarding the charge/inverter circuit, I had suggested the use of this board:?
You could use this board in place of the built-in charger/inverter and supply more than 5v output to both the 3v Reg and the sa612's keeping in mind the max limits of everything.?
BTW, Twitter does have a translation feature.?
Are you able to post the Twitter link or just look for #nanovna?
On Mon, 7 Oct 2019 at 6:44 PM, hwalker<herbwalker2476@...> wrote: Thanks for the analysis Larry.? I thought the modification would pique your interest. I was wondering what was going on with the port 0 coax cable replacement.? Since photos were provided for 1090 MHz and 1350 MHz I was hoping the modification was wideband but the tuned length idea makes sense.? Hopefully a full write-up will follow from the member. I thought the separate power source was for lower noise.? If it is for higher voltage that would make it difficult to incorporate on board without using a step up switching regulator.
Regards,
Herb
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Re: Inflation of this forum
Please explain to me how hashtags would help?
Mike WY6K
"... somewhere in the distance, there's a tower and a light, broadcastin' the resistance, through the rain and through the night..."
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On Monday, October 7, 2019, 02:13:50 PM CDT, Martin via Groups.Io <martin_ehrenfried@...> wrote:
I would be helpful if the Nano VNA group owner enabled the Hashtag option as others have previously suggested.
This needs to be set from the group owners admin page before it can be used.
I'd suggest a few to get things started
#Nano VNA Hardware
#Nano VNA Firmware
#Nano VNA Bug report
#Nano VNA New feature
#Nano VNA Saver Software
#Nano VNA Saver Bug report
#Nano VNA Saver New feature
#Nano VNA Documentation
I'm sure others would get added by users once it became normal to tag posts.
Regards,
Martin - G8JNJ
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Re: NanoVNA firmware extended to 1500MHz with added scan command
On Mon, Oct 7, 2019 at 03:38 PM, Pierre Martel wrote:
Yes twitter does use google translate.
--------------------------------------------------------------------------------------------- Pierre, Must be a setting I'm missing. I have yet to locate the translate feature from inside the Twitter app. Herb
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Bo, OZ2M
David J Taylor
WY6K Mike Watts