I don't remember this being mentioned before:
When the S-A-A-2 (NanoVNA-V2) frequency is changed, it does a "self cal" using an open, short, and load on its Port 0 input switch. The result is not great, but it is not terrible for some purposes. It seems to do a pretty good job near the center of the Smith chart, but not so well at the edges. Other than the expected phase differences due to the different calibration plane, it works quite well from 20 MHz to 700 MHz. I assume that the "raw" data it reports over the USB port actually uses this self-cal.
My unit has firmware version git-20200229-aea0dc4.
--John Gord
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Font size not change, change only some glyph like 'T', 'Y', 'V', 'M', 'K', 'R', 'C', '0', '3', '.', ':', ',' (and some small lile 'b', 'x', 'g', 'v')
About points count, i test on my NanoVNA-H variable points set (51 and 101) all worked. For H4 a try complete this then i recive it. Difficult write code and not test it on device. I test some part on my H version, but...
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On Wed, Apr 1, 2020 at 03:45 PM, hwalker wrote:
On Wed, Apr 1, 2020 at 10:17 AM, DiSlord wrote:
I hope updated font look better
===============================================
DiSlord,
The larger AA fonts in the previous beta firmware version might be
preferable to some users. Perhaps that version could be the Nano-VNA-H4
antenna analyzer version, and the current beta version the default VNA
release.
All other changes appear to be working. What are your thoughts about
increasing the measurement points from 101 to a higher number in the future?
More points would not be backwards compatible to the NanoVNA-H, but would take
advantage of the larger flash memory and faster processor on the NanoVNA-H4.
- Herb
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Re: Storing and transporting your NanoVNA
John,
I used a hard shell plastic case with a foam liner that my $35 microphone came in.? I suspect, then,
that those cases are readily available cheap somewhere!
73
Glen K4KV
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On 4/1/2020 12:33, john@... wrote: I'm wondering what folk are using for storing and transporting their NanoVNA and accessories. My little cardboard box is falling apart.
Thanks
-John
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I have always used a Tee connector with the signal generator and the signal detector connected to the straight through connections, and the stub connected to the 90 degree angled connector. Just about any combination of signal generator and signal detector could be used, certainly including a NanoVNA. I have Tees here in several connector styles, including SMA, BNC, UHF, and probably others. I used to sweep stub filters with a Cushman communications monitor with spectrum analyzer and tracking generator, which had all BNC connectors as I recall. But I still used it for making RG-59 stubs with F connectors by using a BNC to F adapter on the stub. So long as the adapter is short and an insignificant portion of a wavelength at the desired frequency, it won't affect the measurement. I have also soldered cables together to make the Tee and stub and avoid the adapters.
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On Wed, Apr 1, 2020 at 10:17 AM, DiSlord wrote:
I hope updated font look better
===============================================
DiSlord,
The larger AA fonts in the previous beta firmware version might be preferable to some users. Perhaps that version could be the Nano-VNA-H4 antenna analyzer version, and the current beta version the default VNA release.
All other changes appear to be working. What are your thoughts about increasing the measurement points from 101 to a higher number in the future? More points would not be backwards compatible to the NanoVNA-H, but would take advantage of the larger flash memory and faster processor on the NanoVNA-H4.
- Herb
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Re: [Suggestion] AA version display
On Wed, Apr 1, 2020 at 02:37 PM, CT2FZI wrote: One question before I flash it, fully compatible with nanovnasaver? Luis CT2FZI I don't know because I have not used this firmware. Roger
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Re: [Suggestion] AA version display
Yes thats what I was thinking about...! Thanks for the headsup. One question before I flash it, fully compatible with nanovnasaver? Cheers! Luis CT2FZI <> On Wed, 1 Apr 2020 at 22:13, Roger Need via groups.io <sailtamarack= [email protected]> wrote: Try the reald firmware. Bigger fonts for use in sunlight...
You will find it here>>
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Re: [Suggestion] AA version display
Try the reald firmware. Bigger fonts for use in sunlight...
You will find it here>>
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[Suggestion] AA version display
Hello everyone, specially our developers.
Since we have an Antenna Analyzer version of our FW, can we have it more simple for field use?
Simple information like SWR, or at least lowest SWR, etc...
Some examples below.
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1/4 w stubs for filtering harmonics in a so2r setup
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Thanks DiSlord you are absolutely right , I added the? "d" and it's ok, sorry my fault.
Jos
Op 1-4-2020 om 20:33 schreef DiSlord:
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Need use 'bandwidth'
You enter 'bandwith' lost 'd'
Use 'help' command for recive list of all supported commands
On Wed, Apr 1, 2020 at 11:28 AM, Jos Stevens wrote:
Hi DiSlord,
Thanks for the new firmware. I flashed it and it runs OK. font looks ok
to me,? but I tried the bandwith command, when I enter bandwith,
bandwith 9 or whatever number, I always get back "Bandwith?", sorry
about that.
Regards
Jos
Op 1-4-2020 om 19:17 schreef DiSlord:
Small update for NanoVNA-H4
Font fixes (try made mo readable, fix some font glyph)
Little slowdown i2c bus (as i calculated in last version i set 800kHz speed, it too fast, set it to 600kHz)
Little display text error fixes
I hope updated font look better
|
Need use 'bandwidth'
You enter 'bandwith' lost 'd'
Use 'help' command for recive list of all supported commands
toggle quoted message
Show quoted text
On Wed, Apr 1, 2020 at 11:28 AM, Jos Stevens wrote:
Hi DiSlord,
Thanks for the new firmware. I flashed it and it runs OK. font looks ok
to me,? but I tried the bandwith command, when I enter bandwith,
bandwith 9 or whatever number, I always get back "Bandwith?", sorry
about that.
Regards
Jos
Op 1-4-2020 om 19:17 schreef DiSlord:
Small update for NanoVNA-H4
Font fixes (try made mo readable, fix some font glyph)
Little slowdown i2c bus (as i calculated in last version i set 800kHz speed,
it too fast, set it to 600kHz)
Little display text error fixes
I hope updated font look better
|
Hi DiSlord,
Thanks for the new firmware. I flashed it and it runs OK. font looks ok to me,? but I tried the bandwith command, when I enter bandwith, bandwith 9 or whatever number, I always get back "Bandwith?", sorry about that.
Regards
Jos
Op 1-4-2020 om 19:17 schreef DiSlord:
toggle quoted message
Show quoted text
Small update for NanoVNA-H4
Font fixes (try made mo readable, fix some font glyph)
Little slowdown i2c bus (as i calculated in last version i set 800kHz speed, it too fast, set it to 600kHz)
Little display text error fixes
I hope updated font look better
|
Small update for NanoVNA-H4
Font fixes (try made mo readable, fix some font glyph)
Little slowdown i2c bus (as i calculated in last version i set 800kHz speed, it too fast, set it to 600kHz)
Little display text error fixes
I hope updated font look better
|
Re: Storing and transporting your NanoVNA
I use a high impact case from Apache.
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On Wed, Apr 1, 2020, 12:34 PM <john@...> wrote: I'm wondering what folk are using for storing and transporting their
NanoVNA and accessories. My little cardboard box is falling apart.
Thanks
-John
|
Re: Storing and transporting your NanoVNA
I've got mine in a belt-mounted digital camera soft-case with two compartments - one for the nano and the other for adapters and cables.
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On Wednesday, April 1, 2020, 12:34:00 p.m. GMT-4, john@... <john@...> wrote:
I'm wondering what folk are using for storing and transporting their NanoVNA and accessories. My little cardboard box is falling apart.
Thanks
-John
|
Re: Storing and transporting your NanoVNA
John,
Dave-KB1PVH
Sent from my Galaxy S9
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On Wed, Apr 1, 2020, 12:34 PM <john@...> wrote: I'm wondering what folk are using for storing and transporting their
NanoVNA and accessories. My little cardboard box is falling apart.
Thanks
-John
|
Storing and transporting your NanoVNA
I'm wondering what folk are using for storing and transporting their NanoVNA and accessories. My little cardboard box is falling apart.
Thanks
-John
|
Never mind - just click on the "Read-Only" button to open the presentation
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On Wednesday, April 1, 2020, 12:19:34 p.m. GMT-4, Larry Rothman <nlroth@...> wrote:
Why is it password protected ?
? ? On Wednesday, April 1, 2020, 11:55:21 a.m. GMT-4, W1RS <deflatermaus@...> wrote:
Here is another good reference
from Fritz Dellsperger, Professor for RF and Microwave Engineering (HB9AJY )
at Bern University of Applied Sciences
from 1992 to 2012, now retired
There is a good powerpoint presentation link in the page.? I will try to post it to the Files section as "Smith-Chart Intro_2016_en_pwd.zip"
There is a Computer Smith-Chart Tool and S-Parameter Plot called "Smith" V4.1, The demoversion may be freely distributed.
The demoversion is limited to 5 datapoints and 5 elements which is good for matching design.
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Why is it password protected ?
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Show quoted text
On Wednesday, April 1, 2020, 11:55:21 a.m. GMT-4, W1RS <deflatermaus@...> wrote:
Here is another good reference
from Fritz Dellsperger, Professor for RF and Microwave Engineering (HB9AJY )
at Bern University of Applied Sciences
from 1992 to 2012, now retired
There is a good powerpoint presentation link in the page.? I will try to post it to the Files section as "Smith-Chart Intro_2016_en_pwd.zip"
There is a Computer Smith-Chart Tool and S-Parameter Plot called "Smith" V4.1, The demoversion may be freely distributed.
The demoversion is limited to 5 datapoints and 5 elements which is good for matching design.
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Jim Allyn - N7JA
Roger Need
CT2FZI
David Webb