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On Mon, Aug 3, 2020 at 04:13 PM, igor-m wrote:

I've built from latest sources with RTC/SDCARD and 192k ADC but H4 does not
start..

Hi Igor,

Did that too, enabled RTC, SDCARD, enabled 192K and it works ok for me.

Also, in order to have the same IF as with 96K
I've modified the nanovna.h at line 50 with this
//#define FREQUENCY_OFFSET 12000
#define FREQUENCY_OFFSET 24000
and it also works ok again

We can wait though for DiSlord to test his code according to how he feels it is ok before he uploads it regarding the 192K so we all have the best results from him.

I've built from latest sources with RTC/SDCARD and 192k ADC but H4 does not start..

I got a brand new Nano vna h v3.4. Right out the box no cables. At all. No connectors. Nothing. No charger. I'm dealing with it right now with the seller and they want me to return it. They did it to me on purpose. But I'm past it. I know it can be fixed. the vna shows white screen and I'm assuming it's fairly easily fixed. Idc if it can't be used without the computer. Whatever. But if anyone knows what causes the screen to be white like that I'd take a stab at fixing it. Not sending it out back to them when they intentionally sent me this bs. All because I needed to change my shipping address. Anyways. Any help is appreciated.

Do you mean the "bandwidth" settings Igor ?

Nope, I talk stop frequency.
Setting for example 1500MHz or 2000MHz disconnects the H4 from serial, it also offers to "save the .bmp" when clicking on Scan.

Bandwidth is a different issue..

On Mon, 3 Aug 2020 at 07:45, Gabriel Tenma White <OwOwOwOwO123@...>
wrote:

LGPL does not allow releasing binaries without the source code. The only
difference compared to GPL is that you are allowed to dynamically "link"
proprietary libraries to a LGPL program, but since on a microcontroller
there is usually only static linking, LGPL is equivalent to GPL, but yes
they are not interchangeable and GPL code can not be turned into LGPL.

If the advert is to be believed, then the GPL code has been changed to
LGPL, which is not legal. I would like to know the reason for the extra L.

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

Check phase measure to 2.7G

Its ..... perfect

Hi Christos,
Please try using the forum's search feature.?
I created a 'how to search' document that is the first item in the forum's Wiki.
Search on:? bandwidth AND setting
... Larry



On Mon, 3 Aug 2020 at 4:51 PM, Christos SV1EIA via groups.io<sv1eia@...> wrote: One more question, is there any post that describes what the bandwidth setting does?

One caution regarding using the NANO's for Duplexer tuning (and I've done
many using the HP 8753C): Typical goal is to adjust for at least 100 dB
isolation between receive and transmit frequencies for amateur repeater
operation. This applies to a 6-can BPBF design. The 8753C has enough
dynamic range to accomplish 110 dB of isolation with careful adjustment and
good cabling. However, the NANO's do not. They are capable of 70 dB,
depending on frequency, but not any more. You can typically 'guess' at the
middle of the isolation curve by rocking adjustments back and forth, but no
assurance of the target 100 dB (or better) isolation. If you are happy
with 70 dB of isolation, OK. Otherwise, not.

Dave - W?LEV

--
*Dave - W?LEV*
*Just Let Darwin Work*

On Mon, Aug 3, 2020 at 01:50 PM, Christos SV1EIA wrote:

One more question, is there any post that describes what the bandwidth setting
does

In simple words:
Then NanoVna measure signal level and phase it made fft (fast fourier transform for IF frequency) and grab all IF power in bandwidth range, bigger bandwidth, less measure, but also grab noise in this range. Less BW, more measure need, but less noise range and better result.

One more question, is there any post that describes what the bandwidth setting does?

Someone had asked about using the NanoVNA for duplexer tuning.
There is an excellent video on that by David Houser KG5RDF here:


Sorry but I could not find the original poster of the question about being able to do this.

73,

Sam
W3OHM

On Mon, Aug 3, 2020 at 01:20 PM, Christos SV1EIA wrote:

On Mon, Aug 3, 2020 at 01:12 PM, DiSlord wrote:

better reset config, 'clearconfig 1234'
And made touch calibration if need, after save config (config->save)

Thank you DiSlord, you are the best.
You have really done impressive upgrades!
I'm new to this firmware so got questions :-)
Appart from saving the params to card, is there a feature to take screenshots
saved in card too?

Please read post, all this new features about SD card in it
/g/nanovna-users/message/14447

For made screenshot need tab on BW text at bottom
For save s1p or s2p file SD Card-> SAVE ...

On Mon, Aug 3, 2020 at 08:23 PM, igor-m wrote:

What is the max frequency set? I cannot do 2000MHz (v0157, H4 108fw).
Also the BW - sometimes it takes over what has been set in H4, once it
overwrites the H4, not sure I understand it how it should work.

Do you mean the "bandwidth" settings Igor ?

If so, that is not the scan frequency, that is the baseband bandwidth, which can be set to 10Hz to 4000Hz .. NOT MHz

The baseband bandwidth is the bandwidth seen by the VNA at each scan spot frequency as it scans across the scan range. The higher the baseband bandwidth the faster the VNA scans, so low bandwidth settings make the VNA scan very slowly.

On Mon, Aug 3, 2020 at 01:12 PM, DiSlord wrote:

better reset config, 'clearconfig 1234'
And made touch calibration if need, after save config (config->save)

Thank you DiSlord, you are the best.
You have really done impressive upgrades!
I'm new to this firmware so got questions :-)
Appart from saving the params to card, is there a feature to take screenshots saved in card too?

On Mon, Aug 3, 2020 at 01:04 PM, Christos SV1EIA wrote:

Is it required to perform any other type of manual command and initialization
from the console prior to use the newly flashed firmware ?

better reset config, 'clearconfig 1234'
And made touch calibration if need, after save config (config->save)

On Mon, Aug 3, 2020 at 12:44 PM, DiSlord wrote:

read this post
/g/nanovna-users/message/14447

Thanks DiSlord,
I see how to change the date/time in the post you mention.
Is it required to perform any other type of manual command and initialization from the console prior to use the newly flashed firmware ?

Add anothes screenshot 30dB up to 2.7GHz
I think it very good perfomance for H4

PS i not good in hardware, but possible need change filter to AIC ADC for get better results

While test 192k ADC i found interesting thing

Can you check work your H4 up to 2.7 GHz in different modes vs this firmware?

PS i see good results up to 2GHz, but and to 2.7GHz results not bad.
see screenshot
1-2.7GHz vs 40dB attenuator
1-2GHz vs 60dB attenuator

PS also fix some bugs, made startup more safe, BW show update after console command
PS 192k ADC code upload to git, but not enabled

On Mon, Aug 3, 2020 at 12:38 PM, Christos SV1EIA wrote:

Hi,

Got a H4.
A few questions

1. After flashing the new firmware, is it required to perform any type of
manual command and initialization from the console commannds ? Obviously the
previous calibrations are not valid anymore. What do I need to clean ?
2. What type of SD cards should I use, is there any recommendation on size or
brand/type ?
3. How can I enter the date/time ?
4. Is there any document that describes the new functionality or is there
anyone that can give a small synopsis, a brief of additions?

Any help is appreciated.

73,
Christos SV1EIA

read this post
/g/nanovna-users/message/14447

Hi,

Got a H4.
Managed to get and solder the proper SD card part based on DiSlord's hint on what to buy.
Also soldered the required 32.768KHz osc.

My previous version is the latest release from Hugen's github.
And now I have flashed the new version from DiSlord.

A few questions

1. After flashing the new firmware, is it required to perform any type of manual command and initialization from the console commannds ? Obviously the previous calibrations are not valid anymore. What do I need to clean ?
2. What type of SD cards should I use, is there any recommendation on size or brand/type ?
3. How can I enter the date/time ?
4. Is there any document that describes the new functionality or is there anyone that can give a small synopsis, a brief of additions?

Any help is appreciated.

73,
Christos SV1EIA