Same here. My interests are restricted to <30 MHz. There are important behaviors above that, but well within the 900 MHz limit. I use mine for the bench. I have a tribander at 60', a 40m dipole and an EFHW for camping. I already know their characteristics and as long as they appear to be working normally, I don't much bother with them anymore. But on the bench, the little VNA has opened up possibilities that were tedious before, and helped me understand circuit theory that I never really understood until now.
It will take awhile to get the hang of navigating the menu system, but it's worth getting proficient at it even if you decide to use the PC or Android software. I found this book helpful for getting started:
Eric KE6US
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On 3/27/2020 5:48 PM, Louis Warner wrote: Thanks, Eric. I'm going to order it.
As far as the upgraded NanoVNA-H, rarely would I use it at the 2m VHF band, almost exclusively in the 1 - 30 MHz range. My intended use is strictly as an antenna analyzer in the HF bands.
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If you want to support the ttrftech buy them here:
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On Fri, Mar 27, 2020 at 8:49 PM Louis Warner <Lou@...> wrote: Thanks, Eric. I'm going to order it.
As far as the upgraded NanoVNA-H, rarely would I use it at the 2m VHF
band, almost exclusively in the 1 - 30 MHz range. My intended use is
strictly as an antenna analyzer in the HF bands.
--
73,
Don KB2YSI
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Aldo you are an extremely gifted educator and writer. Exceptional article! Best intro I¡¯ve ever read on the smith chart. I wish you would write more. In fact, write a book. I would buy it!
Randy
NC8U
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On Mar 27, 2020, at 6:31 AM, Aldo Cugnini <acugnini@...> wrote:
Hi all,
A bit late in responding, but to all those who are just starting out, and having a learning curve approaching the Smith Chart, I have put together an introductory article. You can find it here:
73's
Aldo
W2AGC
--
------------------------------------------------------------------------
*Aldo Cugnini*
/908-867-8550/
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Thanks, Eric. I'm going to order it.
As far as the upgraded NanoVNA-H, rarely would I use it at the 2m VHF band, almost exclusively in the 1 - 30 MHz range. My intended use is strictly as an antenna analyzer in the HF bands.
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Moderated
Re: Another off-topic about Smith chart
Do a google search and down load Sim Smith. You can download your s files directly and are much informed
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I bought that exact one, but with the terminator kit. A friend told me it has a much nicer case than his. It works fine. I've spend days on end measuring everything in sight on my workbench. Components, various filters, questionable coax, homebrew circuits I've built over the years. Everything but antennas. Made a BNC calibrator set. Designed and printed some 3D fixtures for it which are posted on Thingiverse.com. Very instructive. No problems with it at all.
Eric KE6US
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On 3/27/2020 3:30 PM, Louis Warner wrote: Is there a preferred hardware vendor located in the USA?
I'm looking at buying this offering. Anybody see a problem? Thanks
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This one is a newer version, NanoVNA-H:
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On 3/27/20 15:30, Louis Warner wrote: Is there a preferred hardware vendor located in the USA?
I'm looking at buying this offering. Anybody see a problem? Thanks
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Is there a preferred hardware vendor located in the USA?
I'm looking at buying this offering. Anybody see a problem? Thanks
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Re: First PCB pictures of the V2
Hi,
Could you please share the STL?
Cheers
*73 de Lu¨ªs, CT2FZI*
*QRV @ 145.300 MHz | **CQ0VMST (VHF REP Monsanto)*
<>
<>
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On Fri, 27 Mar 2020 at 19:15, <ersoz@...> wrote: Made a housing for the new NanoVNA V2.
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Re: First PCB pictures of the V2
Made a housing for the new NanoVNA V2.
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If you're good at soldering surfacemount (and have a microscope or by magnifying glass, try re-flowing the PCB solder pins on the nanovna's USB-C connector.If either of the data lines is not connecting, you will see that error.Remove the battery first if you're going to try this.
Conversely, get an old USB cable, strip? the wires at one end and solder directly to the data lines at the 2 small buffer resistors (22ohm I think).If it doesn't work one way, swap the data lines - BUT under no circumstances allow 5V on to the datalines - you'll kill the interface. USB datalines have 3V signals.
I hope this helps.
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On Friday, March 27, 2020, 1:05:33 p.m. GMT-4, i2NDT Claudio via Groups.Io <i2ndt@...> wrote:
well...I duly disinstalled the drivers several times...and actually USBDeview didn't find any driver related to STMsomething.
yesterday I spent the whole afternoon with uncle Google trying to find some help about that "unknown device" error code...but I was unsuccesful...maybe didn't make the right questions!
I also checked the group...
I guess I am the first one with this problem!
and, moreover, I also checked the H4 on another PC just rebuilt ex-novo with windows 10 PRO. same result: "Unknown device"!
i2NDT Claudio
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On Fri, Mar 27, 2020 at 10:05 AM, i2NDT Claudio wrote:
...I also checked the H4 on another PC just rebuilt ex-novo with windows 10 PRO. same result: "Unknown device"!
============================================
Claudio,
Until you are able to eliminate the USB-C to USB-A cable as the culprit (per hugen's suggestion), you may be transferring the problem to each PC you are trying to use.
Good luck.
- Herb
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well...I duly disinstalled the drivers several times...and actually USBDeview didn't find any driver related to STMsomething.
yesterday I spent the whole afternoon with uncle Google trying to find some help about that "unknown device" error code...but I was unsuccesful...maybe didn't make the right questions!
I also checked the group...
I guess I am the first one with this problem!
and, moreover, I also checked the H4 on another PC just rebuilt ex-novo with windows 10 PRO. same result: "Unknown device"!
i2NDT Claudio
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Let's be nice people.
Most people assume the device they are working with is at fault, not the underlying platform (Windows in this case).
Even a good search won't return the results you need if your premise is wrong. So please save the finger pointing for something more serious than "Why didn't he just google it?"
Just saying; it is of little profit to post "google it".
Cheers, Ed H. KT4ED
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On 3/27/2020 7:31 AM, Gyula Molnar wrote: this can also be a solution. The problem is not with nanovna, but with the pc operating system. If you know google you shouldn't have asked the question here.
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Moderated
Re: Another off-topic about Smith chart
Actually, I should have said, the real axis coordinates are scaled as the real part of (1+¦£)/(1-¦£), i.e., the normalized impedance Z_L / Z_o .
-- Aldo
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On 3/27/2020 9:39 AM, Aldo Cugnini via Groups.Io wrote: Exactly. The real axis coordinates are scaled as (1+¦£)/(1-¦£), i.e., the real part of the normalized impedance Z_L / Z_o .
-- Aldo
On 3/26/2020 8:52 PM, WB2UAQ wrote:
The Smith Chart is a plot of the reflection coefficient where it's magnitude covers 0 to 1 having a phase angle from 0 to 360 degrees (0 to 2pi radians) (vector....mag and phase angle).? The impedances, the three circles, correspond to mag and phase of the reflection coefficient.? Basicallya these three circles are over laid onto the reflection coefficient.
I agree that it is not easy to be very accurate.?? Tough to mark and read off the impedance coordinates in many places on the chart.
--
------------------------------------------------------------------------
*Aldo Cugnini*
/908-867-8550/
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Moderated
Re: Another off-topic about Smith chart
Hi all, A bit late in posting this, but to all those who are just starting out, and having a learning curve approaching the Smith Chart, I have put together an introductory article.? You can find it here: 73's Aldo W2AGC
------------------------------------------------------------------------
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On 3/27/2020 9:39 AM, Aldo Cugnini via Groups.Io wrote: Exactly. The real axis coordinates are scaled as (1+¦£)/(1-¦£), i.e., the real part of the normalized impedance Z_L / Z_o .
-- Aldo
On 3/26/2020 8:52 PM, WB2UAQ wrote:
The Smith Chart is a plot of the reflection coefficient where it's magnitude covers 0 to 1 having a phase angle from 0 to 360 degrees (0 to 2pi radians) (vector....mag and phase angle).? The impedances, the three circles, correspond to mag and phase of the reflection coefficient.? Basicallya these three circles are over laid onto the reflection coefficient.
I agree that it is not easy to be very accurate.?? Tough to mark and read off the impedance coordinates in many places on the chart.
--
------------------------------------------------------------------------
*Aldo Cugnini*
/908-867-8550/
|
Moderated
Re: Another off-topic about Smith chart
Exactly.? The real axis coordinates are scaled as (1+¦£)/(1-¦£), i.e., the real part of the normalized impedance Z_L / Z_o .
-- Aldo
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On 3/26/2020 8:52 PM, WB2UAQ wrote: The Smith Chart is a plot of the reflection coefficient where it's magnitude covers 0 to 1 having a phase angle from 0 to 360 degrees (0 to 2pi radians) (vector....mag and phase angle). The impedances, the three circles, correspond to mag and phase of the reflection coefficient. Basicallya these three circles are over laid onto the reflection coefficient.
I agree that it is not easy to be very accurate. Tough to mark and read off the impedance coordinates in many places on the chart.
--
------------------------------------------------------------------------
*Aldo Cugnini*
/908-867-8550/
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GREAT Article, Aldo - Thanks!
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On Friday, March 27, 2020, 9:31:15 a.m. GMT-4, Aldo Cugnini <acugnini@...> wrote:
Hi all,
A bit late in responding, but to all those who are just starting out,
and having a learning curve approaching the Smith Chart, I have put
together an introductory article.? You can find it here:
73's
Aldo
W2AGC
--
------------------------------------------------------------------------
*Aldo Cugnini*
/908-867-8550/
|
Hi all,
A bit late in responding, but to all those who are just starting out, and having a learning curve approaching the Smith Chart, I have put together an introductory article.? You can find it here:
73's
Aldo
W2AGC
--
------------------------------------------------------------------------
*Aldo Cugnini*
/908-867-8550/
|
this can also be a solution. The problem is not with nanovna, but with the pc operating system. If you know google you shouldn't have asked the question here.
|
Lou
CT2FZI
@blackmagic
Aldo Cugnini
Gyula Molnar