开云体育

You know that since this is an opensource, whatever change is released with a binary file should have its source in the relevant repository.
From what it looks you do not follow that and you release binaries without the corresponding changes/sources.

You also say that this is to make sure that it works ok and also you do not know if/when you would have time to uplad the sources.
Everyone knows that pushing the sources up to repo is just a single click of a mouse so I do not understand exactly what you mean.

Just to be clear, my main concern here is if you try to change a fully respected hugen79 opesource project, the nanoVNA-H4 into a closed source one.
You can simply have your own repo and another branch, eg dev-H4 like everybody else in the opensource community uses as methodology and upload all your development changes there.
But you should have the changed sources uploaded and not distribute only binaries.
You can follow the proper process if you want since you do have forked the original repositories in your repository area


I hope you will do the right thing.

Same issue: ‘Hundreds’ of YouTubes.

A suggestion list of You Tubes from WB8GUS
From Time Comment Link
How it works? IMSAI Guy 16:49 Okay
What is a VNA W2AEW 16:49 Okay
Calibrate VNA W2AEW 10:06 Why Calibrate VNA
Measure SWR of Antenna W2AEW 6:07 Ham Use
Return Loss vs SWR IMSAI Guy 7:34 Okay
Loss & Length of Coax W6LG 14:16 Okay
Beginner’s Guide Joe Smith 56:24 Overview for Ham

Other Sources:
VNA Software Hex & Flex Read up
Tutorial RF Wireless World Read Up

Try to read the manual from the groups site. Then proceed to search some more. A couple of hours on the above You Tubes is well spent if you are starting ‘cold’ but with some electronics understanding. The unit is pretty nice for the price. You will want to search on Smith charts, measuring filters, antenna systems (antenna and feeding systems). Look for building you own Short-Open-Load devices (not to difficult and if in ‘one piece’ handy to put with the unit in a Go Kit.

Just go slow and learn as you go. 73

Don, WB8GUS


Sent from Mail<> for Windows 10

From: Rick Cooper<mailto:Richard.cooper38@...>
Sent: Monday, June 22, 2020 3:45 PM
To: [email protected]<mailto:[email protected]>
Subject: Re: [nanovna-users] First Steps

Do a search on YouTube. There's tons of videos about the VNA's.


Rick Cooper
PO Box 63
Black Canyon City, AZ
85324

720-333-4313


On Mon, Jun 22, 2020, 5:54 AM Tim N9PUZ <tim.n9puz@...> wrote:

I am a new NanoVNA owner and have received my unit through GigaParts. For
a new user who has a device that comes with close to zero instructions the
list looks like an incredible resource but is a bit like trying to drink
from a fire hose!

Could any one recommend a file, video, or site that is a good first step
to this device? I am initially interested in antenna tuning/analysis but
eventually want to move on to explore other features.

Tim N9PUZ

Hi Edward,

I have a fellow member in my local club that worked at Amphenol and knew the engineers who made the TNC, N, C, BNC connectors. These letters are just the initials of the engineers.

I keep telling people that UHF (the SO-239 and PL259 class) doesn't mean "Ultra High Frequency" it stands for "Unspecified High Frequency", as in unspecified impedance.

Since I learned that, I've used nothing but N in my antenna systems and jumpers where possible.

From the horses mouth.

73
Danny
K5CG

and no-one has mentioned that the PL259/SO239 were 36 ohm connectors,
designed for use with, I think, RG-3, now replaced with RG83, 45 ohm
cable, and designed way back when 100 MHz equipment was considered to be
really hot stuff.

----- Original Message -----

From: "Edward Lukacs" <elukacs@...>
To: "nanovna-users" <[email protected]>
Sent: Tuesday, June 23, 2020 7:01:42 AM
Subject: Re: [nanovna-users] RF Demo Kit Testing tutorial released

Regarding a proper connector, I'm amazed that no-one has mentioned the
old-as-the-hills, but still? excelleent and durable BNC connector.? It's
more sturdy, can tolerate many thousands of insertions and removals, and
provides a consistent, good impedance match from DC to low microwave,
and is available in all of the common smaller coax cables, at least to
RG58/59/62. The Type N is hideously overszed for this tiny board, and
no-one has mentioned that the PL259/SO239 were 36 ohm connectors,
designed for use with, I think, RG-3, now replaced with RG83, 45 ohm
cable, and designed way back when 100 MHz equipment was considered to be
really hot stuff.

Anyone using this setup?



Dave/N9ZC

Before release, I wanted to get a feedback about how well SD card code works (for better response it contain a lot of debug info sended in console).
Need remove debug code and then i upload it to git, at this moment loaded only FatFS and RTC library (this stable code).

Also for it need time (i receive tiniSA and NanoVNA v2 for test)

PS about OTG, yes STM32F0... and STM32F3.. used in NanoVNA not support USB OTG mode, only USB 2.0 FS device interface
See

On Tue, 23 Jun 2020 at 13:01, Edward Lukacs <elukacs@...> wrote:

Regarding a proper connector, I'm amazed that no-one has mentioned the
old-as-the-hills, but still excelleent and durable BNC connector. It's
more sturdy, can tolerate many thousands of insertions and removals, and
provides a consistent, good impedance match from DC to low microwave,
and is available in all of the common smaller coax cables, at least to
RG58/59/62.

BNC does NOT provide a good consistent connection. That’s why a threaded
version, called TNC was invented.

BNC connectors would be a poor choice for a test port on a VNA.

There are no professional grade BNC calibration kits available at an
economical price.

The Type N is hideously overszed for this tiny board, and
no-one has mentioned that the PL259/SO239 were 36 ohm connectors,
designed for use with, I think, RG-3, now replaced with RG83, 45 ohm
cable, and designed way back when 100 MHz equipment was considered to be
really hot stuff.

The SO-239 socket would not be an ideal choice, but at least *sturdy*
adapters to N are available. The mediocre performance of PL-259 would be
largely irrelevant once an adapter to N is added was added.

INHO, the only sensible connector for an item to be used outdoors testing
antennas is N. That’s probably why Anritsu Sitemasters and Keysight
FieldFoxs use N connectors. The FieldFox instruments above 18 GHz use
smaller connectors due to the maximum operating frequency of an N
connector.

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

Regarding a proper connector, I'm amazed that no-one has mentioned the old-as-the-hills, but still? excelleent and durable BNC connector.? It's more sturdy, can tolerate many thousands of insertions and removals, and provides a consistent, good impedance match from DC to low microwave, and is available in all of the common smaller coax cables, at least to RG58/59/62. The Type N is hideously overszed for this tiny board, and no-one has mentioned that the PL259/SO239 were 36 ohm connectors, designed for use with, I think, RG-3, now replaced with RG83, 45 ohm cable, and designed way back when 100 MHz equipment was considered to be really hot stuff.

I bought a -F (clone, for $84 via AliExpress) and received it a couple of weeks ago. It is FAR, FAR nicer to use (meaning "see" or "read" than the standard 2.8 inch model I've had since last October. The -F is much larger physically, and much heavier, though. Mostly because it has a very sturdy-feeling metal case and a 'large' 5,000 mA hr battery. Unfortunately, I don't know if it's worth double the price of an H4, but I'm very satisfied.

Ok, I took your advice and after calibrating I tried a U.Fl to SMA on the through with a known SMA dipole antenna and the measurement was spot on... implying the 'too low' measurement is probably accurate and it's user error. Thanks everyone.

Mark

Thanks everyone for the info. I did order/receive one of those apparently ubiquitous boards with male u.fl connectors on it. Although the open/short/load seemed to work to calibrate the cable, the 900MHz antenna I'm testing uses a female U.Fl so I used the through to attach it and got strange results. Close but shifted down in frequency... as if there's extra length or an inductor in there somewhere.. I just don't trust the through to be a transmission line I guess. I'll see if I can de-embed it somehow.

Thanks.

On Fri, Jun 12, 2020 at 12:30 AM, DiSlord wrote:

I upload all my releases to
/g/nanovna-users/files/Dislord%27s%20Nanovna%20-H%20Firmware

SD card support not compleded, all beta for test you can find in this thread
(but my main firmware thread is
/g/nanovna-users/topic/nanovna_firmvare_compiled_by/73181877?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,40,73181877)

@DiSlord
Your work is very good.
But, is there a repository with your changes for the H4 that we can use to compile ?
Specifically with the latest nice additions on H4.
Seen the binary files but I could not find any source code for them.

On Mon, 22 Jun 2020 at 20:58, <namerati@...> wrote:

Be that as it may: in my opinion, for proper outdoor antenna use, a VNA
should also have physical keys (as opposed to a touch screen), weather
sealing / water resistance, a very bright (and tough!) screen, as well
as being physically robust enough to survive a decent drop and/or the
rigours of life in a box of equipment.

For professional use I would agree. But amateurs don’t need to be tune
antennas in the rain, which makes weatherproofing an unnecessary expense.
But for any outdoor use, an N connector is pretty much essential.


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

On Mon, Jun 22, 2020 at 04:47:02PM +0100, Dr. David Kirkby, Kirkby Microwave Ltd wrote:

I have to disagree with that. The extra size would be of no practical
consequence to most people if a NanoVNA was in a larger case suitable for N
connectors. The small size and battery operation makes the unit portable,
but few people use SMA connectors outside. Most people will use an adapter
to SO-239 or N.

Personally, the "pocket sized" nature of the NanoVNA is a major attraction. Even an R+S portable would be too big for my particular application.

Be that as it may: in my opinion, for proper outdoor antenna use, a VNA should also have physical keys (as opposed to a touch screen), weather sealing / water resistance, a very bright (and tough!) screen, as well as being physically robust enough to survive a decent drop and/or the rigours of life in a box of equipment.

Also a neck or shoulder strap for those times when the user is climbing a mast and does not wish to test the drop resistance...

At that juncture I imagine a separate add-on "outdoor rugged case" (with N connectors!) would be something users might be willing to pay extra for.

Thanks Herb, for the information

--
"K4EGP / Edward G Prentice" <K4EGP.ham@...>
Retired software engineer QTH:EM95na

Ah, Wiki, Sorry I did not check that. Will do. Thank you!

--
"K4EGP / Edward G Prentice" <K4EGP.ham@...>
Retired software engineer QTH:EM95na

Agree 100%Sent from my Samsung Galaxy smartphone.

nanoVNA in general is an open source, open hardware project so should be all its derivatives.
The nanoVNA-F is a 'fork' of the original nanoVNA that is not open hardware (at least from what is shown so far).
Its schematic and changes to the original nanoVNA is not released although it is supposed to do that since it is based on edy555's work according to what they themselves say on their github repositort .

That alone made me to phase them out of any buying option, not to mention that their overpriced device (twice the price of nanoVNA-H4) has lower specs.

Regardless of the legalities, as it seems the nanoVNA-H4 is a clear winner as it has better specifications, great product packaging, many developers, it is open source open hardware with everything released.
Until the newly V2 proves itself, IMHO the nanoVNA-H4 is a must have.

Missed this one:
/g/nanovna-users/topic/71984705?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,71984705

Do a search on YouTube. There's tons of videos about the VNA's.


Rick Cooper
PO Box 63
Black Canyon City, AZ
85324

720-333-4313

BTW, All I used was the search term "comparison" and this popped-up:

/g/nanovna-users/message/12353

Note - the H and H4 units have had a lot of firmware enhancements by several devs whereas the F has one dev doing firmware updates.

Also, using DiSlord's latest firmware, the H4 can now save to an onboard SD card and has a number of other enhancements that put it on par or above the F.

YMMV