Re: Wich one the get ? nanoVNA F or H4
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.
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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
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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.
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Re: NanoVNA firmvare, compiled by DiSlord #firmware with MiniSD support
#firmware
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.
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Re: RF Demo Kit Testing tutorial released
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
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Re: RF Demo Kit Testing tutorial released
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.
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Re: Wich one the get ? nanoVNA F or H4
Thanks Herb, for the information
--
"K4EGP / Edward G Prentice" <K4EGP.ham@...>
Retired software engineer QTH:EM95na
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Ah, Wiki, Sorry I did not check that. Will do. Thank you!
--
"K4EGP / Edward G Prentice" <K4EGP.ham@...>
Retired software engineer QTH:EM95na
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Agree 100%Sent from my Samsung Galaxy smartphone.
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-------- Original message --------From: Aristarchus <aristarchos.from.samos@...> Date: 2020/06/22 21:53 (GMT+02:00) To: [email protected] Subject: Re: [nanovna-users] Comparison between #nanovna-f and #nanovna-h4 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 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.
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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.
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Missed this one: /g/nanovna-users/topic/71984705?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,71984705
On Monday, June 22, 2020, 3:40:23 p.m. EDT, Larry Rothman <nlroth@...> wrote: 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
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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
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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
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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
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Edward,
Have you referred to the forum's WIKI??
All the info is listed there - and has also been mentioned in a number of message threads.
Links to WIKI and FILES areas are at the end of every forum email.
Check them out - lots of info.
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On Monday, June 22, 2020, 3:05:26 p.m. EDT, Edward <k4egp.ham@...> wrote:
I looked but did not see this question asked yet.
I decided I want the 4" screen. It seems both the NanoVNA-F and NanoVNA-H4 have a 4" screen
and have similar frequency range, but I'm having a hard time telling what is different between the two. Do they
use the same firmware? Are they both reliable? There does seem to be a price delta, but I'm not clear what
else is different. Also, what is the best place to buy from in case I need warranty service?
--
"K4EGP / Edward G Prentice" <K4EGP.ham@...>
Retired software engineer QTH:EM95na
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I looked but did not see this question asked yet.
I decided I want the 4" screen. It seems both the NanoVNA-F and NanoVNA-H4 have a 4" screen
and have similar frequency range, but I'm having a hard time telling what is different between the two. Do they
use the same firmware? Are they both reliable? There does seem to be a price delta, but I'm not clear what
else is different. Also, what is the best place to buy from in case I need warranty service?
--
"K4EGP / Edward G Prentice" <K4EGP.ham@...>
Retired software engineer QTH:EM95na
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Tim, I fixed my H4 by slightly loosening the case screws, as suggested in some posts. I shared the success with GigaParts, so they can relate that to other customers. Now I¡¯ll join you on our journey to learn!
73, Les AA5NA
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Hi Les,
What did you buy - the H or the H4?
Some of the early H4 units had problems with the housing pressing on the touchscreen.
Loosen the housing (4 screws) and then see if you still have the problem.
There are several threads in the forum and Wiki about this.
Good Luck!
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On Monday, June 22, 2020, 2:34:01 p.m. EDT, Les <lesbiffle@...> wrote: Tim, I got mine from gigaparts this weekend, and it boots up to a copyright screen, and not to a Smith chart.? Did your get beyond the copyrights?? Tasha Sandlin at Gigaparts told me to go to this forum for help: Unfortunately we cannot provide you with technical support on this item. The link below may be of some assistance with your questions: /g/nanovna-usersThanks. -Les
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Re: NanoVNA firmvare, compiled by DiSlord #firmware with MiniSD support
#firmware
The STM32F303 does not support OTG.
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On Monday, June 22, 2020, 2:31:09 p.m. EDT, CT2FZI <ct2fzi@...> wrote:
Dear DisLord,
A quick question, would it be reasonable to support USB pen drive via OTG?
Thanks!
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Tim, I got mine from gigaparts this weekend, and it boots up to a copyright screen, and not to a Smith chart. Did your get beyond the copyrights? Tasha Sandlin at Gigaparts told me to go to this forum for help: Unfortunately we cannot provide you with technical support on this item. The link below may be of some assistance with your questions: /g/nanovna-usersThanks. -Les
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Re: NanoVNA firmvare, compiled by DiSlord #firmware with MiniSD support
#firmware
Dear DisLord,
A quick question, would it be reasonable to support USB pen drive via OTG?
Thanks!
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Dr. David Kirkby, Kirkby Microwave Ltd
Edward
RandMental
CT2FZI