Re: First PCB pictures of the V2
I've brought this issue to the team. It's going to be NanoVNA-B V2, if you don't object. I'm only an engineer on the development team (for OwOComm) and my name comes from a fictitious character who has no relation to this project ;)
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Re: First PCB pictures of the V2
Hi Gabriel,
Congrats to see working your product.
As I posted in the former message, I think that you should use a name such as V2 or Pro.
I propose that your product should be named as NanoVNA-G derived from your initial.
Again, I strongly say that you should use the name of V2.
I hope you think this issue seriously.
Regards,
@edy555
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Re: errors of "error" models
Good morning GIN&PEZ;
I am confused by your comment of number 4 being redundant. I am OK with the remainder.
--
73
Gary, N3GO
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On Fri, Dec 20, 2019 at 02:19 AM, hwalker wrote:
Jan-Feb 2020 Issue of the ARRL QEX magazine
seems a pity it could not be posted for non members to read,looks like an interesting read.
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Re: First PCB pictures of the V2
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The Jan-Feb 2020 Issue of the ARRL QEX magazine has a cover story on the NanoVNA by Dr. George Steber:
"Dr. George R. Steber, WB9LVI, reviews a tiny vector network analyzer (VNA) introduced for about US$50 and compares its capabilities with full-featured lab grade analyzers that cost thousands of dollars. An RF VNA is the instrument of choice for measuring the electrical parameters of antennas, components, filters and more. Dr. Steber describes his experiences with the tiny VNA, termed a NanoVNA. He begins with a short description of some technical specifications, and relates how he acquired the NanoVNA. He then includes historical details on the evolution of the product. Next, he describes the general architecture of the instrument, and finally he describes the operation of the unit and including examples."
- Herb
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Re: errors of "error" models
#87: The 5 Main Points in the First Introduction of an Automatic VNA System - REF : #85: On the Formation of a Virtual Port - 15 December 2019 : /g/nanovna-users/message/8237In "An Automatic Network Analyzer System", Microwave Journal, May 1968, p.46 the 5 main points have as follows: but the scaring "nontouching loop rule" mentioned in number 4 is redundant. gin&pez@arg :87#
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Re: errors of "error" models
@Gary O'Neil, N3GO : 19 December 2019 : /g/nanovna-users/message/8399Dear Gary, [pdf]=>[pdf-xchange-2.5.322.10]:[export-to-image]:[png][300x300-true-color-24 bpp]:[8-pages]=>[cdware][*]:[psp5.0.3]:[sharpen-more][resize:50%][grey-scale] [decrease:16][optimized-nearest][brightness/contrast:0/18]=>[8-images]=>[pdf- -shaper-9.6]:[image-to-pdf][fit-to-page(keep...)]=>[pdf:of-reduced-size]=>[pdf- xchange-2.5.322.10]:[ocr][preserve][medium]=>[pdf:of-reduced-size-with-search] [*] cdware : A Classification of Ware Types : - done - sent - Best regards, gin&pez@arg
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looks like messages got mixed up there.
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Re: Strange readings on my modded vna.
well i made the case for it from copperclad board,stripped it,made sure the copper wasnt shorting the outer of the sma conectors together,a min later one fell off,resoldered it now it seems ok so far,cheers all 73 paul.
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Re: First PCB pictures of the V2
In my opinium, the on/off and the jog switch can better be swapped.
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Re: Strange readings on my modded vna.
On Thu, 19 Dec 2019 at 09:11, <nanovnauser@...> wrote: no ideas on this then folks? It¡¯s impossible to work out what you have done from your description, so I have no idea. Dave. -- Dr. David Kirkby, Kirkby Microwave Ltd, drkirkby@... Telephone 01621-680100./ +44 1621 680100 Registered in England & Wales, company number 08914892. Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Chelmsford, Essex, CM3 6DT, United Kingdom
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Hi Nanovnauser USB socket ??. The delay is part of the onscreen menu by selection "Display" then "Scale" then "Electrical Delay" Kind regards Kurt -----Oprindelig meddelelse----- Fra: [email protected] < [email protected]> P? vegne af nanovnauser@... Sendt: 19. december 2019 21:25 Til: [email protected]Emne: Re: [nanovna-users] problems just wondering how you charge it without the usb socket?
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just wondering how you charge it without the usb socket?
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Re: Strange readings on my modded vna.
sorry about all the caps,didnt realise untill i had hit the post tab,didnt mean to be rude.
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Re: Strange readings on my modded vna.
Hi NanoVNAuser Out of the box it is 0 Kind regards Kurt -----Oprindelig meddelelse----- Fra: [email protected] < [email protected]> P? vegne af nanovnauser@... Sendt: 19. december 2019 14:51 Til: [email protected]Emne: Re: [nanovna-users] Strange readings on my modded vna. tHANKS KURT,WHAT SHOULD THE DELAY BE OUT OF THE BOX?,AS IVE MESSED WITH MINE BEFORE,I CAN SET IT TO ORIGINAL AND WORK FROM THERE,I DIDNT MALE A NOTE BEFORE I CHANGED IT! 73 pAUL
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Yes I would like to know how to upgrade the firmware.? I know there is a dongle from ST that will do it.? This nano has had the USB connector removed.? I would like to solder it back but it's too small, beyond my soldering skills.? I have the tools but not good enough hand stability and vision acuity.
Anyone who could help is welcome to try.
Bob
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On Thursday, December 19, 2019, 01:14:13 AM PST, Gyula Molnar <gyula.ha3hz@...> wrote:
Hi Bob,
It is true that when one has several hours, one does not know the exact time.
Anyone with multiple VNAs doesn't know which one is accurate - maybe because everything is relative?? :-) :-) :-)
(Although mass production works, there are still differences in the side-by-side product.)
73, Gyula HA3HZ
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Re: First PCB pictures of the V2
Gabriel. change of screen rotation is just a trivial edit of one line in the setup section of the code.
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Re: Strange readings on my modded vna.
tHANKS KURT,WHAT SHOULD THE DELAY BE OUT OF THE BOX?,AS IVE MESSED WITH MINE BEFORE,I CAN SET IT TO ORIGINAL AND WORK FROM THERE,I DIDNT MALE A NOTE BEFORE I CHANGED IT! 73 pAUL
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Re: First PCB pictures of the V2
From some hobbyist market sales I've been involved with, at least in the U.S. the second psychological price barrier is $100 -- three digits tends to scare people off.? (The first barrier seems to be $25 or so; below that, it's thought of as an impulse purchase).? Personally, I'd think $80 or $90 would not be a problem given the extra value of the larger screen.
John
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On Dec 19, 2019, 12:09 AM, at 12:09 AM, Gabriel Tenma White <owowowowo123@...> wrote: "The success of the NanoVNA-F indicates that packaging and display size
are a primary motivator for a lot of buyers"
Market analysis shows the -F has about 1/10th of the sales volume as
the -H, so I would say price is a primary motivator for most buyers,
unfortunately ;)
Still I agree that most users do want a larger screen, it's just a
matter of not also hiking the cost too much. I think it might be
possible to offer the 4'' V2 at around $80 or so, but can't make
promises yet (pricing and marketing is not my job).
SPI interface: yes, since the LCD is easy to unplug we are also
considering using that connector for daughterboards. There isn't much
space for another pin header and branching out the high speed SPI lines
will mess with signal integrity.
Hugen isn't related to us. But I'm really interested in his plans for
V2/3GHz ;)
no-display version: yes, V2 Lite will be a tiny, USB-only 3GHz VNA, at
an extreme price (aiming for $20 retail). It's currently one-port but
we are considering adding port 2 if the cost ceiling can be maintained.
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OwO
gin&pez@arg
Dr. David Kirkby, Kirkby Microwave Ltd
Kurt Poulsen