have an H4 nano that has been working just fine with my W10 x64 for the
last couple of years. Then one day a week ago it will nolonger connect to
saver. It attempts to connect 10 times then quits.
I then used another laptop using W10 x64 and it does the same thing.
So then i pulled my original 2.8 nano out which has not been used for many
years and no updates to it. It connects and works and it works just fine
on both laptops.
One more note about my H4. It works on a unix os.
So where in rhe problem?
I plan on upgrading my H4 tomorrow to the latest code. Can someone please
point me to the correct download address for the latest H4 upgrade?
Thanks for your help.
Fred
N4CLA
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Thanks. Since you develop the firmware. Do you know the latest hardware
revision of the NanoVNA H4 (serial number)? Or if any updates are planned?
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Re: NanoVNA H4, Windows 11 and firmware update
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Re: NanoVNA H4, Windows 11 and firmware update
dislords version is more actual
owenduffy stops at 209 while dislord is at 215
greetz sigi dg9bfc
Am 10.07.2023 um 23:15 schrieb Roger Need via groups.io:
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Andrea,
The easiest way to upgrade is to use the built in firmware update feature in NanoVNA app which works with bin or dfu files. It is a Windows application that interfaces with a NanoVNA and is a very useful program. There are several forks of the original program written by OneOfEleven. I like the Owen Duffy version which is available below....
You can learn how to use it in this groups.io post
/g/nanovna-users/message/28096
This beginners guide shows you how to flash with nanoVNA app starting on page 45
Roger
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Re: NanoVNA H4, Windows 11 and firmware update
Andrea, The easiest way to upgrade is to use the built in firmware update feature in NanoVNA app which works with bin or dfu files. It is a Windows application that interfaces with a NanoVNA and is a very useful program. There are several forks of the original program written by OneOfEleven. I like the Owen Duffy version which is available below.... You can learn how to use it in this groups.io post /g/nanovna-users/message/28096This beginners guide shows you how to flash with nanoVNA app starting on page 45 Roger
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Re: Handling the nanoVNA h4
I forgot to mention, by feedpoint, I mean the point where the coax begins. ** A coaxial cable has two ends. For you, it starts on which side? I'm sure it doesn't start on the same side for everyone :) -- Fran?ois De la part de Dave (NK7Z) Envoy¨¦ : dimanche 9 juillet 2023 22:46
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Re: NanoVNA H4, Windows 11 and firmware update
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Latest hardware version for NanoVNA-H4
Hello,
What is the latest hardware version of the NanoVNA-H4? And is there a
(minor) update planned, such as protection diodes, or something similar?
Best regards,
Ma?l H?rz
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NanoVNA H4, Windows 11 and firmware update
Hi. I know that this topic has been covered a lot. However I can't make my NanoVNA be recognised by my PC running Windows 11 64-bit (latest version) using the DFU SE. Please note:
1) I have read and followed the beginners guide
2) I installed the driver, but no devices appear in the "Available DFU devices" upper selector in the DFU SE.
3) In the device manager, when I set my NanoVNA H4 in DFU mode, it appeard as "STM32 Bootloader" under "USB devices"
4) It does the same with my TinySA Ultra
5) If I use the STM32 Cube programmer, the NanovNA H4 is perfectly recognized, but it can manage only .bin files (no .dfu ones) and not all the FW versions are available in this format
6) For the over stated reason, I can easily update the firmware of my TinySA Ultra, but not the NanoVNA
I have heard that .dfu files can be converted into .bin files. This could solve definitely my problem. However I can't find specific and accurate instructions about that.
Any suggestions?
Many thanks. ?
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Re: Handling the nanoVNA h4
I forgot to mention, by feedpoint, I mean the point where the coax begins.
If a dipole, right after the center insulator, if a vertical, right after the coax starts, and on the coax, if an antenna that has a matching transformer on it, after the matching transformer.
73, and thanks,
Dave (NK7Z)
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
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On 7/9/23 13:42, Dave (NK7Z) wrote: Hi again,
Once you have added the ferrite material, check by putting the nano down, and picking it up again.? If the frequency still slides around try increasing the number of turns until you see no, or little, change in frequency.
Once you arrive at a point where you are seeing little, or no change in frequency, it is time to tune the antenna.
73, and thanks,
Dave (NK7Z)
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 7/9/23 13:24, Edward Stavin VE3VYT via groups.io wrote:
Interesting. So should I be sure to avoid contact with the nanovna while observing or tuning the antenna swr?
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Re: Handling the nanoVNA h4
Hi again,
Once you have added the ferrite material, check by putting the nano down, and picking it up again. If the frequency still slides around try increasing the number of turns until you see no, or little, change in frequency.
Once you arrive at a point where you are seeing little, or no change in frequency, it is time to tune the antenna.
73, and thanks,
Dave (NK7Z)
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
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On 7/9/23 13:24, Edward Stavin VE3VYT via groups.io wrote: Interesting. So should I be sure to avoid contact with the nanovna while observing or tuning the antenna swr?
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Re: Handling the nanoVNA h4
Totally depends on the design of your antenna.
With something like a ground plane antenna, your had should do little.
A Yagi antenna with a Balun, your hand should do little.
HF Dipole with a Balun, your hand should do little.
A long wire antenna or no Balun, yes, your hand would do quite a bit.
Easy test.?? Kent
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On Sunday, July 9, 2023 at 03:24:32 PM CDT, Edward Stavin VE3VYT via groups.io <edwardstavin@...> wrote:
Interesting. So should I be sure to avoid contact with the nanovna while observing or tuning the antenna swr?
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Re: Handling the nanoVNA h4
Hi,
This indicates you have become part of the antenna system... It also indicates you might consider adding a good 1:1 choke at the antenna feedpoint, and try the test again. I would guess you will see less of a slide...
See:
for more on how and why this works...
73, and thanks,
Dave (NK7Z)
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
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On 7/9/23 13:02, Edward Stavin VE3VYT via groups.io wrote: Hi. I have set and calibrated the nanovna and then hooked up my antenna to see the SWR graph. Let's say I have a 20m antenna attached and it shows a nice dip at 14.45Mhz to swr of 1.2. all this time of course the device has been in my hand.
Without moving my feet I put the nanoVNA on the nearby plastic chair and when I let go the dip slides left to 14.2Mhz.
Is it normal to see different swr readings like this when holding or not holding the nanoVNA? Which is the correct reading? Sorry for the newb question. Appreciate any input.
Edward
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Re: Handling the nanoVNA h4
Interesting. So should I be sure to avoid contact with the nanovna while observing or tuning the antenna swr?
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Re: Handling the nanoVNA h4
You were part of the resonate circuit of the antenna.
You were a? Counterpoise!
Virtually every talkie is depending on the operators hand to be the other half of the antenna.
Kent WA5VJB?? Antenna Editor CQ Magazine.
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On Sunday, July 9, 2023 at 03:02:27 PM CDT, Edward Stavin VE3VYT via groups.io <edwardstavin@...> wrote:
Hi. I have set and calibrated the nanovna and then hooked up my antenna to see the SWR graph.? Let's say I have a 20m antenna attached and it shows a nice dip at 14.45Mhz to swr of 1.2.? all this time of course the device has been in my hand.
Without moving my feet I put the nanoVNA on the nearby plastic chair and when I let go the dip slides left to 14.2Mhz.
Is it normal to see different swr readings like this when holding or not holding the nanoVNA? Which is the correct reading?? Sorry for the newb question. Appreciate any input.
Edward
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Hi. I have set and calibrated the nanovna and then hooked up my antenna to see the SWR graph. Let's say I have a 20m antenna attached and it shows a nice dip at 14.45Mhz to swr of 1.2. all this time of course the device has been in my hand.
Without moving my feet I put the nanoVNA on the nearby plastic chair and when I let go the dip slides left to 14.2Mhz.
Is it normal to see different swr readings like this when holding or not holding the nanoVNA? Which is the correct reading? Sorry for the newb question. Appreciate any input.
Edward
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NanoVNA-h and H4 sources open
And yes colors possible change only from console
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To clarify, I mean from within the NanoVNA GUI itself, as what I found requires using the console, which makes experimenting with colors difficult. References to change colors over the console: /g/nanovna-users/wiki/12760/g/nanovna-users/message/23259I also ask, because the firmware seems to be closed source and the wiki not updated to the latest changes.
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Hi,
Is it possible to set the trace colors in DiSlord's firmware (still
waiting for another question before deciding which model to buy)?
Other colors can be more suitable and contrasting in some situations.
Best regards,
Ma?l H?rz
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Re: NanoVNA (Classic) or NanoVNA-H4 for filters, crystals etc.
On most firmware versions, the averaging or bandwidth settings can be manipulated to give longer settling time at each frequency step. This helps for narrowband devices.
--John Gord
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On Sat, Jul 8, 2023 at 05:37 PM, Jim Lux wrote:
The problem with high Q is that the NanoVNA only samples for a
millisecond - that is, it switches the stimulus and receiver frequencies
to the next step, then delays a *short* time to let the synthesizers
lock, then measures for a millisecond.
If the thing you're measuring has a time delay, or takes a while to
settle, then the measurement won't be as accurate. The "time constant"
for a resonator (i.e. the time for the energy to decay to 37%, 1/e) is Q
radians. Since one cycle is 2pi radians, the number of radians is 2*pi
greater. So Q/(2*pi) is the number of cycles, each of which is 1/f, so
after Q/(2*pi*f) seconds, the energy will be 37%. (down 4.3 dB)
If your resonator has a Q of 5000, and resonates at 10 MHz, we can run
some numbers: 5000/(2*pi*10E6) = about 0.08 milliseconds - so probably
not a big deal.
I've not thought about what phase error one would get from the delay,
though.
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Roger Need
Andrea I2UEA