Re: Measure a single wire (not coax) for frequency
Not really
A 1/4 wave antenna is NON-FUNCTIONAL.
i.e. it does not work ........ by itself.
A 1/4 wave only works as a resonate antenna went mounted on a ground plane about 1/2 by 1/2 wavelengths.
So mount a connector in the middle of the roof of you car, have the NanoVNA on one side and the 1/4 wave element on the other side, and then you can find it's resonate frequency.?
Kent WA5VJB? Antenna Editor CQ Magazine.
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On Sunday, June 19, 2022, 10:01:47 PM CDT, Brian Donaldson <brianb253@...> wrote:
We can use the time honored formula of 234/length to get the quarter wave frequency of a piece of wire. But... is there a way to connect that wire (e.g. 14AWG 7 strand insulated) to the NanoVNA and get the near resonant frequency?
Regards
Brian D
KF6BL
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Measure a single wire (not coax) for frequency
We can use the time honored formula of 234/length to get the quarter wave frequency of a piece of wire. But... is there a way to connect that wire (e.g. 14AWG 7 strand insulated) to the NanoVNA and get the near resonant frequency?
Regards
Brian D
KF6BL
|
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On Sunday, June 19, 2022, 07:48:44 PM EDT, marksheffield@... <marksheffield@...> wrote:
I have an OG nanoVNA - about 2-1/2 years now and am thinking about updating the firmware.? How do I find out the hardware version number and the firmware version number for my unit?? I would like to find out those particulars prior to searching for compatible firmware
thanks
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I have an OG nanoVNA - about 2-1/2 years now and am thinking about updating the firmware. How do I find out the hardware version number and the firmware version number for my unit? I would like to find out those particulars prior to searching for compatible firmware
thanks
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Yes, use the x64.zip file. No need for the source zip file. Extract the
zip, then click on the exe file to run it. Your older firmware should be
fine; you only need newer firmware if you want more features.
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On Sat, Jun 18, 2022, 7:11 PM Robert Coleman <rcoleman@...> wrote: Roger,
Thanks for that info - I did have the right page but guess I didn't
wait long enough fo the program to load. I should use the .64 program,
since I have Win 10 as my OS, correct? Also, do I have to load the source
code.zip file, or just leave it? And my current F/W is the 20201013 , will
it be ok for the Nano saver program? A few other users have suggested some
later F/W but I thought I'd work with the earlier F/W just to get used to
the SAA-2N.
Thanks for your help, I'll let you know how things work out.
--
72/73 de k1qed, bob.c qrp 4evr!
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Roger,
Thanks for that info - I did have the right page but guess I didn't wait long enough fo the program to load. I should use the .64 program, since I have Win 10 as my OS, correct? Also, do I have to load the source code.zip file, or just leave it? And my current F/W is the 20201013 , will it be ok for the Nano saver program? A few other users have suggested some later F/W but I thought I'd work with the earlier F/W just to get used to the SAA-2N.
Thanks for your help, I'll let you know how things work out.
--
72/73 de k1qed, ?bob.c ? ? ? ? qrp 4evr!
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On Sat, Jun 18, 2022 at 03:13 PM, Robert Coleman wrote:
For most of today I have been searching for a nano saver offering that works
with my SAA-2N and that will actually download. I've seen lots of github lists
of programs with no ".exe"in the program. i did find a group of zip files,
among them two with .64 and .86 which i tried. But they resulted in a small
black screen with the title above the screen but nothing in the screen. i do
This is the official NanoVNA Saver github release directory When you start it you will get a black command box. Be patient It will take up to 20 seconds to load the program depending on your disk and computer speed. The reason is that there are a LOT of support and runtime files packaged in the .exe and they have to be unpacked and virus scanned (if you have anti-virus program installed). **Note** Recent versions of NanoVNA Saver do not run on WIN 7 and WIN 8.1. I compiled versions that do run on these OS and you can find a link to them in another post I made a few months ago.. Roger
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For most of today I have been searching for a nano saver offering that works with my SAA-2N and that will actually download. I've seen lots of github lists of programs with no ".exe"in the program. i did find a group of zip files, among them two with .64 and .86 which i tried. But they resulted in a small black screen with the title above the screen but nothing in the screen. i do have the Cypress drier loaded so that's not it. Can you point me to something that will work? i am using a lenovo with win 10 and I have loaded and used the vna-QT program with my SAA-2N, but the nano saver has much more to work with.
Thanks in advance for your help!
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72/73 de k1qed, ?bob.c ? ? ? ? qrp 4evr!
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That sounds great. Should I put the short cable on for calibration since it will be on for all testing that I have planned?Sent from my Galaxy Tab? S2 Yes, you always calibrate at the very end of the cable you are going to use then..
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Re: NanoVNA 4 version 1.0.? Only save at 800Hz
Thank you DiSlord for helping realize my mistake. I was inputing the stimulus frequecy and instead of pressing the M, I was pressing the x1.
73,
John - W7OTD
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Thanks again for your help
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On Sat, Jun 18, 2022, 8:24 AM Jim Lux <jim@...> wrote: For a rough and ready cal, for the open, just don't put anything on. For
HF, there's not a lot of difference between a connector that's open, and a
connector that's missing. It's the short that you really need the right
item.
A connector that's open vs having an actual open calibration standard is
just a slight difference in length, for the most part. And, there's some
tiny amount of radiation from the unshielded opening
It's really all about dimensions relative to a wavelength and even if you
were measuring at, say, VHF frequencies of 100 MHz, a few mm of connector
isn't much compared to "meters"
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For a rough and ready cal, for the open, just don't put anything on. For HF, there's not a lot of difference between a connector that's open, and a connector that's missing. It's the short that you really need the right item.
A connector that's open vs having an actual open calibration standard is just a slight difference in length, for the most part. And, there's some tiny amount of radiation from the unshielded opening
It's really all about dimensions relative to a wavelength and even if you were measuring at, say, VHF frequencies of 100 MHz, a few mm of connector isn't much compared to "meters"
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I am sure it will all work out with a little bit of patience.
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On Sat, Jun 18, 2022, 6:24 AM HA3HZ <gyula@...> wrote: Mike,
I'm glad you managed to 'speak' the device.
I¡¯ve been monitoring things since the release of NanoVNA and trying to
describe this on my web page.
Unfortunately, I can¡¯t answer everyone¡¯s question. It¡¯s of interest to me
- and I think I¡¯ve tried to gather a topic that interests others as well.
I try to keep the software updates up to date in pdf files, you will also
find a link to download them.
Here you can read what has changed in the firmware compared to the
previous one.
Useful time to use the device.
--
Gyula HA3HZ ( )
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Re: Where can I find the latest STM upgrade SW download for a NanoVNA-H4
If you have any further questions, please check out my website. You may find new information.
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Gyula HA3HZ ( )
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Mike,
I'm glad you managed to 'speak' the device.
I¡¯ve been monitoring things since the release of NanoVNA and trying to describe this on my web page.
Unfortunately, I can¡¯t answer everyone¡¯s question. It¡¯s of interest to me - and I think I¡¯ve tried to gather a topic that interests others as well.
I try to keep the software updates up to date in pdf files, you will also find a link to download them.
Here you can read what has changed in the firmware compared to the previous one.
Useful time to use the device.
--
Gyula HA3HZ ( )
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You can use the NanoVNA-App or NanoVNA-saver.
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Re: NanoVNA 4 version 1.0.? Only save at 800Hz
On Stop frequency input you use x1 (input as Hz, not in MHz), so input result 7.3Hz, NanoVNA not allow set this value and set minimum 800Hz
Start value less then 800Hz, so and Start value also set to 800Hz
Start value = Stop value, so NanoVNA switch to CW mode
PS use correct input
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Re: Where can I find the latest STM upgrade SW download for a NanoVNA-H4
Hi , some time ago , I solved the proble forcing the installation of the ST driver .
Go to location of you have installed the DfuseDemo programa like this on my PC
C:\Program Files (x86)\STMicroelectronics\Software\DfuSe v3.0.6\Bin\Driver\Win10
dpinst_amd64.exe dpinst_x86exe
execute dpinst_amd64.exe if the system is 64 bit
execute dpinst_x86exe if the system is 32 bit
of course as administrator of the system :
Best regards
Maurizio IZ1MDJ
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That sounds great. Should I put the short cable on for calibration since it will be on for all testing that I have planned?Sent from my Galaxy Tab? S2
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-------- Original message --------From: "John Gord via groups.io" <johngord@...> Date: 6/18/22 12:25 AM (GMT-06:00) To: [email protected] Subject: Re: [nanovna-users] Nanovna H4 #nanovna-h4 Mike,You can just leave the connector empty instead of using the "open" standard.? There is very little difference at 1500MHz and below.? (This assumes you are using the normally supplied standards which are SMA male.)--John GordOn Fri, Jun 17, 2022 at 09:43 PM, Mike McKinney wrote:>> YeeHaw! I finally got that rascal updated and seems to be working right. Now> just have to wait for the open calibration cap to get here to calibrate and> test some antennas and coax.Sent from my Galaxy Tab? S2> -------- Original message --------From: Stan Dye <standye@...> Date:> 6/17/22? 10:47 PM? (GMT-06:00) To: [email protected] Subject: Re:> [nanovna-users] Nanovna H4 #nanovna-h4 The likely cause of your current issue> is that when you upgrade from asubstantially earlier version of firmware,?> you need to "clear config", andthen power-cycle the nano.? Thus clears the> config variables that may beincompatible with the new firmware.? I think the> "clear config" command isunder the config/expert settings menu in that> firmware.There is a newer version of firmware,? which has not yet been added> to thefiles section of this group. It is at DiSlord's> github: down the page and> click.on the NanoVNA.H4.v1.2.00.dfu file todownload it.? It will also need> the clear configfollowed by re-doing thetouchscreen cal, etc.On Fri, Jun 17,> 2022, 7:52 PM Mike McKinney <theranger53@...> wrote:> Well, I updated> the firmware to the latest version I could find, and that> was a joke. This> thing is F;;;ed now. Can turn it on but I can¡¯t calibrate> the touch and> save it. I touch in the center of the screen and get the> start screen for> setting the Frequency. Can¡¯t open the menu with touch only> with the button> on top. Version 1.0.64 was the newest I could find. If> there is a newer one> could you point me to it. This is a DiSlord version> that I found through the> Absolute beginner PDF.>> Sent from Mail (> ) for> Windows>> *From:* HA3HZ> ( gyula@... )> *Sent:* Friday, June 17, 2022 3:12 AM> *To:*> [email protected]> *Subject:* Re: [nanovna-users] Nanovna H4> #nanovna-h4>> Mike,>> The error message means, as Hugen wrote, that you need> to update the> NanoVNA firmware because the software you were using did not> recognize the> command. So the firmware has not been updated for you, but the> software is> waiting for new commands.>> Updating the firmware will probably> resolve your issue.>> -->> Gyula HA3HZ ( )>>> >>>>
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Roger Need
Mike McKinney
HA3HZ