Locked
Re: Inflation of this forum
Please explain to me how hashtags would help?
Mike WY6K
"... somewhere in the distance, there's a tower and a light, broadcastin' the resistance, through the rain and through the night..."
toggle quoted message
Show quoted text
On Monday, October 7, 2019, 02:13:50 PM CDT, Martin via Groups.Io <martin_ehrenfried@...> wrote:
I would be helpful if the Nano VNA group owner enabled the Hashtag option as others have previously suggested.
This needs to be set from the group owners admin page before it can be used.
I'd suggest a few to get things started
#Nano VNA Hardware
#Nano VNA Firmware
#Nano VNA Bug report
#Nano VNA New feature
#Nano VNA Saver Software
#Nano VNA Saver Bug report
#Nano VNA Saver New feature
#Nano VNA Documentation
I'm sure others would get added by users once it became normal to tag posts.
Regards,
Martin - G8JNJ
|
Re: NanoVNA firmware extended to 1500MHz with added scan command
On Mon, Oct 7, 2019 at 03:38 PM, Pierre Martel wrote:
Yes twitter does use google translate.
--------------------------------------------------------------------------------------------- Pierre, Must be a setting I'm missing. I have yet to locate the translate feature from inside the Twitter app. Herb
|
Re: NanoVNA firmware extended to 1500MHz with added scan command
That is very interesting.? I would like to get more detailed info.? I am not a twit though - so if anyone else gets more details please be sure to post them.
Thanks,Mike WY6K
"... somewhere in the distance, there's a tower and a light, broadcastin' the resistance, through the rain and through the night..."
toggle quoted message
Show quoted text
On Monday, October 7, 2019, 05:44:25 PM CDT, hwalker <herbwalker2476@...> wrote:
Thanks for the analysis Larry.? I thought the modification would pique your interest. I was wondering what was going on with the port 0 coax cable replacement.? Since photos were provided for 1090 MHz and 1350 MHz I was hoping the modification was wideband but the tuned length idea makes sense.? Hopefully a full write-up will follow from the member. I thought the separate power source was for lower noise.? If it is for higher voltage that would make it difficult to incorporate on board without using a step up switching regulator.
Regards,
Herb
|
Re: NanoVNA firmware extended to 1500MHz with added scan command
Thanks for the analysis Larry. I thought the modification would pique your interest. I was wondering what was going on with the port 0 coax cable replacement. Since photos were provided for 1090 MHz and 1350 MHz I was hoping the modification was wideband but the tuned length idea makes sense. Hopefully a full write-up will follow from the member. I thought the separate power source was for lower noise. If it is for higher voltage that would make it difficult to incorporate on board without using a step up switching regulator.
Regards,
Herb
|
Re: NanoVNA parallel R measurement
Rp = (Rs^2 + Xs^2)/Rs
Xp = (Rs^2 + Xs^2)/Xs
This is in the ARRL handbooks. Just have to keep an eye on the sign of the reactance.
As W5DXP mentions, the impedance range is pretty limited. Above a few hundred ohms the errors get pretty excessive. For the high Z's I use old Gen Rad bridges.
|
Re: NanoVNA firmware extended to 1500MHz with added scan command
Yes twitter does use google translate.
toggle quoted message
Show quoted text
Le lun. 7 oct. 2019 ¨¤ 17:34, hwalker <herbwalker2476@...> a ¨¦crit :
Over on the Twitter universe, hashtag #nanovna, member kakuiwata has demonstrated a hardware modification to the NanoVNA (-H) which in conjunction with the current 1500 MHz firmware gives it 40 dB S21 dynamic range above 1 GHz. His comments are in Japanese so I haven't been able to decipher the nature of his modification (Twitter doesn't appear to use Google Translate). Photos of his modification (not for the faint of heart) and bandpass filter measurements are attached. Thought it might be of interest to some of us hardware types.
Herb
|
Re: NanoVNA does not want to start -solved
Hi i found the IP5305 is the same as the IP5303, with one LED more. I can upload the PDF here and this one is in English !.
|
Re: NanoVNA firmware extended to 1500MHz with added scan command
Thanks Herb,
It looks like the mixers are being powered by a separate regulator, possibly at a slightly higher voltage for better s/n. The coax between port 0 and the reflection mixer is probably a tuned length for use at the test frequency, again to give a better s/n level.
|
Re: Another modified nanoVNA software
Can you just upload it to file section, so others can try ?
Thanks
Andi
|
Re: NanoVNA firmware extended to 1500MHz with added scan command
Over on the Twitter universe, hashtag #nanovna, member kakuiwata has demonstrated a hardware modification to the NanoVNA (-H) which in conjunction with the current 1500 MHz firmware gives it 40 dB S21 dynamic range above 1 GHz. His comments are in Japanese so I haven't been able to decipher the nature of his modification (Twitter doesn't appear to use Google Translate). Photos of his modification (not for the faint of heart) and bandpass filter measurements are attached. Thought it might be of interest to some of us hardware types.
Herb
|
Locked
Re: Inflation of this forum
On Mon, Oct 7, 2019 at 11:06 AM, Wolfgang Kiefer wrote:
The forum was highly informative at the beginning. Thanks to the initiators.
But there are no moderators to separate the wheat from the chaff.
Meaningless comments and constant repetitions are the order of the day. It is
extremely difficult to find an important message under this flood. It is
simply no longer fun to read along here. The abuse in the form of exaggerated,
bloated advertising lines has not been prevented.
I appeal to you, the users, to consider whether your contribution is really
necessary and important.
73, Wolfgang, DH1AKF
Sad to say, your comments are correct. Threads are being hi-jacked and it is very difficult to find desired information. Without a doubt, much good work has been done here. I know since I was here near the beginning. But, if things do not change soon, I'll be leaving this group. There are other things that are more important than sifting through messages that have been asked and answered many times.
|
Re: errors of "error" models
38 : our final report 2 : core uncertainty strips 37 : ann : the uncertainties of our nanovna will be estimated tomorrow /g/nanovna-users/message/4218Hello, Allow us, please, to inform you that we just uploaded the Core Uncertainty Strips for our NanoVNA: r ~ f : x ~ f : info Kernel: 4.0.0 Compiler: GCC 5.4.1 20160919 Architecture: ARMv6-M Core Variant: Cortex-M0 Port Info: Preemption through NMI Platform: STM32F072xB Entry Level Medium Density devices Board: NanoVNA Build time: Aug 2 2019 - 16:40:01 Sincerely, gin&pez@arg 38
|
Hi Larry and in3elx.
Larry he is not repeating himself he is editing his post. But he is
doing it with the web interface of the group.
You on the other side are using the email fonction of the group and
every time in3elx edit his post you receive a new email of his edited
post.
That is why you see [Edited Message Follows] into his messages.
hope this helps.
toggle quoted message
Show quoted text
Le lun. 7 oct. 2019 ¨¤ 15:09, <in3elx@...> a ¨¦crit :
On Mon, Oct 7, 2019 at 07:24 PM, Larry Rothman wrote:
Please stop repeating yourself in the forum - it is very poor etiquette.
You also appear to be the only one with this issue.
Please verify you are following all the various guides that are available
here.
Read, then read some more, then google for nanovna on other websites where
users have created pages about the device.
On Monday, October 7, 2019, 2:16:39 p.m. GMT-4, <in3elx@...> wrote:
[Edited Message Follows]
I can't communicate with the developers.
I don't repeating anything.
What problem I do you create? Is this your etiquette/ham spirit?
This is a forum, those who want to help help me maybe they will, those who don't want to help me can read other things.
Good night. Thanks again.
|
Re: Another modified nanoVNA software
Hi neb40gsm,
me too I would like to try your software.
Thank you in advance.
N.V.
|
Re: Annotated nanoVNA menu diagram
Hi Stan - I think the latest one looks pretty nice. It is more compact, which may help on smaller screens. I think you're doing terrific for not being too familiar with the programming you're using. Anyone with time and Internet search can do it. And remember, there's no way to make everybody happy... My goal is minimizing unhappiness. VNA is conceptually pretty simple, IMO, but acronyms and esoteric naming provoke difficulties. Traditional menus obscure too much. Ideally, one could mouse with menu map: * hover briefly for hints * right-click for more help * left click to execute. .. but * CSS hover does not work for mobile devices - tested mouse with new iOS 13.. * right-click also seems doomed without JavaScript Another possibility is radio buttons to switch action for all map entry links between help and execute.
|
Locked
Re: Inflation of this forum
I would be helpful if the Nano VNA group owner enabled the Hashtag option as others have previously suggested.
This needs to be set from the group owners admin page before it can be used.
I'd suggest a few to get things started
#Nano VNA Hardware
#Nano VNA Firmware
#Nano VNA Bug report
#Nano VNA New feature
#Nano VNA Saver Software
#Nano VNA Saver Bug report
#Nano VNA Saver New feature
#Nano VNA Documentation
I'm sure others would get added by users once it became normal to tag posts.
Regards,
Martin - G8JNJ
|
On Mon, Oct 7, 2019 at 07:24 PM, Larry Rothman wrote:
Please stop repeating yourself in the forum - it is very poor etiquette.
You also appear to be the only one with this issue.
Please verify you are following all the various guides that are available
here.
Read, then read some more, then google for nanovna on other websites where
users have created pages about the device.
On Monday, October 7, 2019, 2:16:39 p.m. GMT-4, <in3elx@...> wrote:
[Edited Message Follows]
I can't communicate with the developers.
I don't repeating anything. What problem I do you create? Is this your etiquette/ham spirit? This is a forum, those who want to help help me maybe they will, those who don't want to help me can read other things. Good night. Thanks again.
|
Re: Annotated nanoVNA menu diagram
I think the latest one looks pretty nice. I was just trying to help a little bit with making it narrower.
I think you're doing terrific for not being too familiar with the programming you're using.
And remember, there's no way to make everybody happy...
|
Re: Annotated nanoVNA menu diagram
Nah - way too crowded. I liked your previous layout That is still the default link.. Retweaked:
|
Please stop repeating yourself in the forum - it is very poor etiquette.
You also appear to be the only one with this issue.
Please verify you are following all the various guides that are available here.
Read, then read some more, then google for nanovna on other websites where users have created pages about the device.
toggle quoted message
Show quoted text
On Monday, October 7, 2019, 2:16:39 p.m. GMT-4, <in3elx@...> wrote:
[Edited Message Follows]
I can't communicate with the developers.
|
WY6K Mike Watts
An Di
gin&pez@arg
Oristo