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Re: Nanovna-Saver 0.2.0 MAC
Dana, a couple of things.
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¡°Older version¡± begs the question - which one? My version of Catalina seems to continue along with Python 3.6. I tried to install 3.7 as recommended as per the instructions in the nanosave groups.io <> group. That turned into a disaster as I kept getting "access denied¡± errors. So installed 3.8 from the Python site. Have you tried nanovna save wiht this version of Python? Thanks, -rick. K7LOG On Nov 12, 2019, at 18:40, Dana Shtun <ve3dss@...> wrote:
The latest version seems to be working just fine on my mac. Just remember with Catalina, the latest Python isn¡¯t working completely so use an older version. Dana VE3DS Toronto Canada where its going - 15C tonight |
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Re: Added to NanoVNA Wiki Re: DFUseDemo
Thank you Larry.
Zadig is usually required to install a driver for an RTL-SDR DVB-T2 TV dongle. I use it often. If you use it incorrectly, you can expect problems with Windows hardware. But the given tip was made very quickly. It can still be fine-tuned. Can I still edit it if necessary? on1bes Herman |
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Re: NanoVNA vs. NanaVNA-Saver
#calibration
Rune,
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I understand that NanoVNA-Saver calibrations aer saved to my computer. Thanks, Mike N2MS On November 13, 2019 at 2:06 PM Rune Broberg <mihtjel@...> wrote: |
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Re: NanoVNA vs. NanaVNA-Saver
#calibration
Hi Mike,
you can - but the NanoVNA-Saver calibrations are not saved on the device, but as files on your computer. So I think you understand it right? :-) -- Rune / 5Q5R On Wed, 13 Nov 2019 at 19:31, MICHAEL ST ANGELO <mstangelo@...> wrote: Rune, |
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Re: NanoVNA Noise improvements. Hugen79's NanoVNA Github Issue #14
#filtering
#noise
#improvement
#hack
#circuit
On Wed, Nov 13, 2019 at 09:52 AM, Gabriel Tenma White wrote:
______________________________________________________________ Gabriel, In my opinion, 3GHz would be great but if you were able to offer reasonable performance to 2.4 GHz to cover the WIFI band, that would satisfy a lot of potential buyers. By reasonable performance, I would think the current performance specifications for the NanoVNA in the 600 - 900 MHz band would be the target. Best of luck, - Herb |
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Re: NanoVNA vs. NanaVNA-Saver
#calibration
Rune,
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I forgot some information about the NanoVNA Saver Cal: If I calibrate my NanaVNA full span and save it to Cal 0 can I calibrate via NanoVNA Saver the same full span using 10 "Segments" to Cal 0? For HF work - Can I calibrate my NanaVNA 1-30Mnz and save it to Cal 1 and then I calibrate via NanoVNA Saver the same 1-30Mhz span using 10 "Segments" to Cal 1? Mike N2MS On November 13, 2019 at 10:39 AM n2msqrp <msangelo@...> wrote: |
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Re: NanoVNA Noise improvements. Hugen79's NanoVNA Github Issue #14
#filtering
#noise
#improvement
#hack
#circuit
I would really like to see si5351 reach 3GHz ;) We also have a full two port (4 S params at once) design in the pipeline too.
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Re: NanoVNA Noise improvements. Hugen79's NanoVNA Github Issue #14
#filtering
#noise
#improvement
#hack
#circuit
On Wed, Nov 13, 2019 at 07:51 AM, Gabriel Tenma White wrote:
"On the V2 design we worked around 3.3V rail supply noise " --------------------------------------------------------------------------------------------------------------- Gabriel, I hope you are able to get your V2 design to market before continued performance improvements to the NanoVNA again leapfrog your anticipated product. - Herb |
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Re: NanoVNA Noise improvements. Hugen79's NanoVNA Github Issue #14
#filtering
#noise
#improvement
#hack
#circuit
On Wed, Nov 13, 2019 at 07:16 AM, Larry Rothman wrote:
"There is an interesting discussion on hugen79's NanoVNA Issues page on Github regarding circuit changes/mods to reduce overall noise levels."------------------------------------------------------------------------------- Larry, Thanks for posting the link to the discussion. It looks like the current 600 - 900 MHz NanoVNA performance specifications are close to being extended to the 900 MHz to 1.5 GHz range. Probably more realistically to at least 1.3 GHz. - Herb |
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Re: NanoVNA Noise improvements. Hugen79's NanoVNA Github Issue #14
#filtering
#noise
#improvement
#hack
#circuit
On the V2 design we worked around 3.3V rail supply noise by using a very wide PLL loop bandwidth (~200kHz), since the noise at the 12kHz IF frequency is impossible to filter out and using an LDO was not an option (the adf4350 draws quite a bit of current). The wide loop filter forces phase coherency between the two PLLs even with a noisy VCO.
5V rail noise is suppressed by using a mixer with differential output and using a differential amplifier for the baseband signal. Even with a single ended output mixer it's possible to suppress power supply influence by experimentally determining the the coefficient of supply voltage on the output DC voltage, and using a difference amplifier with the right gain, since the IF frequency is so low it's basically DC. |
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Re: Is the NooElec nanoVNA any good?
Yep. I bought one. It came with an older firmware and no battery voltage diode. The battery doesn't have a connector, so adding the diode is easier. It arrived well packed, and has worked great. You'll definitely want to upgrade the firmware when you get it. There have been some nice adds in recent versions.
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Re: NanoVNA vs. NanaVNA-Saver
#calibration
Rune,
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Let me see if I understand this. If I calibrate my NanaVNA full span and save it to Cal 0 can I calibrate via NanoVNA Saver the same full span using 10 "Segments"? For HF work can I If I calibrate my NanaVNA 1-30Mnz and save it to Cal 1 and then I calibrate via NanoVNA Saver the same 1-30Mhz span using 10 "Segments"? Mike N2MS On November 13, 2019 at 2:12 AM Rune Broberg <mihtjel@...> wrote: |
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NanoVNA Noise improvements. Hugen79's NanoVNA Github Issue #14
#filtering
#noise
#improvement
#hack
#circuit
Folks,
There is an interesting discussion on hugen79's NanoVNA Issues page on Github regarding circuit changes/mods to reduce overall noise levels. I'm posting the link here for those who may be interested in the discussion and maybe experimenting with this further. At this time (Nov 13), there are 14 entries in the discussion regarding the addition of filter caps on the clock generator and change to the battery charging circuit. 73...Larry |
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Re: DFUseDemo
Hello Herman,
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Thank you so much Herman, I ow you a lot, you solved my problem !!!!! I just had to delete the drivers in Windows Device manager under "USB devices/ DFU Bootloader". After having done this, when I connected the NanoVNA in DFU mode to the USB port,? it did not show up in the device manager under "USB devices" but under? "USB Serial Bus-controllers", that solved it. You were the only one that reacted on this message sofar, again I ow you a lot !! Thanks many times. Jos (pa3cce) Op 12-11-2019 om 23:41 schreef Herman De Dauw: I never had to use Zadig in Windows 10 64bit to use DFUseDemo. This is probably a problem by you. Put your Hardware Device Manager window on and examinate following. Try uninstalling Zadig (actually a USB driver) until it no longer appears in Hardware Devive Manager window. This may have to be done multiple times. In the View menu, put the option "show hidden devices", you will see them grayed out in the list, and see if there is an earlier installation of Zadig (Zadig itself is not visible, but 'USB lib device' or something similar - i have not the exact names, but don't delete the 'Universal Serial-Bus Controllers'!) delete or uninstall all gray drivers until they are gone. The Wiki Files contains the manual of DFUseDemo and its installation. Follow it carefully. I test it again here, and you don't need Zadig. If you connect the Nano, with the boot button pressed, a "STM Device in DFU Mode" will first appear in Hardware Device Manager (with a yellow triangle). If you wait 20 seconds, the driver is automatically loaded in Windows, and the "STM Device in DFU Mode" is added to the list "Universal Serial-Bus Controllers". If you turn the Nano off, "STM Device in DFU Mode" will remain in the list, but then turn gray. |
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Re: Now at Walmart
Go right ahead and buy one from this place - but we all know you won't - you just like to complain - as noted in your various posts in this forum.
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You get what you give. On Wednesday, November 13, 2019, 1:00:55 a.m. GMT-5, vaclav_sal via Groups.Io <vaclav_sal@...> wrote:
Stay far away from this 3rd party seller.? There are typos all throughout their company info and their shipping policy looks strange and has many spelling mistakes as well. Wow, now we judge products by spelling errors. Never mind that Wally's business model put many establishment where queens English was practiced out of business, employs senior citizens? etc. How shallow can your get? I am ordering mine from guess who? |
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Re: NanoVNA-Saver 0.2.0
Hello Norbert,
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I've put it on the list for a future release. I don't immediately know how to do it nicely, but I think it's an important feature, so I'll certainly try to work on it. :-) -- Rune / 5Q5R On Wed, 13 Nov 2019 at 11:03, <norbert.kohns@...> wrote:
Hi Rune, |
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Re: NanoVNA-Saver 0.2.0
Hi Rune,
thanks for the great software update! Would it be possible to show in the log scaled frequency mode the vertical grid lines logarithmically like 0.1 MHz, 0.2 MHz,...0.9 MHz, 1 MHz,...10 MHz,...100 MHz,...900 MHz? I think, that would give one a much better overview of the frequency axis. Best regards Norbert, DG1KPN |
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Re: Would like to buy NanoVNA
#nanovna-matlab
If you are not in a hurry, you can purchase it next month and I will fix some community feedback issues.
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OwO
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