nanovna-users@groups.io

Re: Order a original nanoVNA

In my experience, few of the Internet sellers have any knowledge of electronics test items; they sell a very wide variety of items from clothing to cooking pans. I was lucky and got my nanovna quickly, without damage and working properly, a few days ago. The shipping cost, via mail to the United States was very low.
Stuart K6YAZLos Angeles, USA

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-----Original Message-----
From: Hans J Albertsson <hans.j.albertsson@...>
To: nanovna-users <[email protected]>
Sent: Thu, Aug 1, 2019 8:05 am
Subject: Re: [nanovna-users] Order a original nanoVNA

I'm currently in the process of buying from Maggie at the link Hugen
provided, and the shipping charge (to Sweden) seems to be nowhere near $40.
I'll report when i know more exactly.

Den tors 1 aug. 2019 16:49Dr. David Kirkby from Kirkby Microwave Ltd <
drkirkby@...> skrev:

On Thu, 1 Aug 2019 at 06:00, <hugen@...> wrote:

I'm sorry, I don't have experience in international sales, I need to pay
an expensive fee for international couriers, using DHL is about $40, Itry
to get my friends to sell through alibaba, but the courier fee will still
be higher than the ebay seller.

I have never looked at Alibaba, but I believe that the buyer protection is
a lot poorer than eBay, so I would be relevant to purchase from there.

There’s no need to spend $40 on DHL shipping. The post office should be
much cheaper.

Mine from eBay had the screening, battery, 4 traces and 900 MHz. The
display didn’t work but, but Hugen said that they are delicate. The seller
replaced it, so I can not complain.

The biggest issue is construction quality.

Personally I would ask eBay sellers to confirm the units they sell have
what you are looking for. Then you have yourself far better covered than
via Alibaba.

Dave.

--
Dr. David Kirkby,

Re: Order a original nanoVNA

#662

I'm currently in the process of buying from Maggie at the link Hugen
provided, and the shipping charge (to Sweden) seems to be nowhere near $40.
I'll report when i know more exactly.

Den tors 1 aug. 2019 16:49Dr. David Kirkby from Kirkby Microwave Ltd <
drkirkby@...> skrev:

Show quoted text

On Thu, 1 Aug 2019 at 06:00, <hugen@...> wrote:

I'm sorry, I don't have experience in international sales, I need to pay
an expensive fee for international couriers, using DHL is about $40, Itry
to get my friends to sell through alibaba, but the courier fee will still
be higher than the ebay seller.




I have never looked at Alibaba, but I believe that the buyer protection is
a lot poorer than eBay, so I would be relevant to purchase from there.

There’s no need to spend $40 on DHL shipping. The post office should be
much cheaper.

Mine from eBay had the screening, battery, 4 traces and 900 MHz. The
display didn’t work but, but Hugen said that they are delicate. The seller
replaced it, so I can not complain.

The biggest issue is construction quality.

Personally I would ask eBay sellers to confirm the units they sell have
what you are looking for. Then you have yourself far better covered than
via Alibaba.

Dave.


--
Dr. David Kirkby,

Re: Order a original nanoVNA

Dr. David Kirkby from Kirkby Microwave Ltd

#661

On Thu, 1 Aug 2019 at 06:00, <hugen@...> wrote:

I'm sorry, I don't have experience in international sales, I need to pay
an expensive fee for international couriers, using DHL is about $40, I try
to get my friends to sell through alibaba, but the courier fee will still
be higher than the ebay seller.


I have never looked at Alibaba, but I believe that the buyer protection is
a lot poorer than eBay, so I would be relevant to purchase from there.

There’s no need to spend $40 on DHL shipping. The post office should be
much cheaper.

Mine from eBay had the screening, battery, 4 traces and 900 MHz. The
display didn’t work but, but Hugen said that they are delicate. The seller
replaced it, so I can not complain.

The biggest issue is construction quality.

Personally I would ask eBay sellers to confirm the units they sell have
what you are looking for. Then you have yourself far better covered than
via Alibaba.

Dave.


-- 
Dr. David Kirkby,

Re: Order a original nanoVNA

jim

#660

Good ...Eliminates the "middle-man" I chose (taobao focus) and their "handleing fees"
Jim

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On Thursday, August 1, 2019, 5:00:26 AM UTC, hugen@... <hugen@...> wrote:  
 
 I'm sorry, I don't have experience in international sales, I need to pay an expensive fee for international couriers, using DHL is about $40, I try to get my friends to sell through alibaba, but the courier fee will still be higher than the ebay seller.

Re: Order a original nanoVNA

#659

This is precisely what we've been looking for from the European (and
possibly the US) horizon, a way to know what hw version we're buying, even
if our proficiency in chinese is non-existent.

Den tors 1 aug. 2019 07:00 <hugen@...> skrev:

Show quoted text

I'm sorry, I don't have experience in international sales, I need to pay
an expensive fee for international couriers, using DHL is about $40, I try
to get my friends to sell through alibaba, but the courier fee will still
be higher than the ebay seller.

Re: Order a original nanoVNA

#658

I'm sorry, I don't have experience in international sales, I need to pay an expensive fee for international couriers, using DHL is about $40, I try to get my friends to sell through alibaba, but the courier fee will still be higher than the ebay seller.

Re: Possible location of latest VNA source code??

#657

On Thu, Aug  1, 2019 at 06:14 AM, Lapo Pieri wrote:


 18:26 Tue 30 Jul 19  , hugen@... wrote:
Since powering up from DFU mode, aic3204 fails to be initialized atpower-on, which will cause I2C abnormality. Re-powering up will make aic3204
normal initialization work normally.

Ok, so it's what it has to do, no instability. Fine. One can wait some
seconds or just disconnect the battery when working on fw.

Thank you

Lapo, IK5NAX
After leaving the DFU mode, it will work normally after rebooting.Most developers, it is easier to debug through swd mode using st-link or daplink.

Thank you！
hugen

Re: Free gift with NanoVNA

#656

I have had that several times with other items from China, perhaps you are right. 

Peter

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On Jul 31, 2019, at 4:42 PM, vbifyz <3ym3ym@...> wrote:

Same experience here, eBay seller xspar. The letter in the "free gift"  package had the real tracking number. The unit arrived 10 days later.
I think it is some trick to game eBay, maybe to show them faster delivery times to improve their rating or something.

Re: nano cases

#655

I think the real value of the nanovna is as a teaching tool. I already have really good accurate scalar analyzers, but no experience with a VNA. 

Stuart K6YAZ 
Los Angeles, USA

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On Jul 29, 2019, at 8:19 AM, Frank S <ka2fwc@...> wrote:

There is you metal can, but that was designed to go in the can. Reworking the Nano to go in a can would be more of a pain, because the controles are not laid out in that format.
I might get one of these for HF?? "portable" antenna measurements, wont work at UHF/VHF

On 7/29/2019 11:00 AM, Dave Daniel wrote:
Sark 100 antenna analyser

Re: nano cases

#654

Thanks! The jog switch is actually easier to use with the case, it just feels more natural. The protection is also important, it should prevent the USB and switches from ever breaking off.
The reason for that shape is that I wanted it longer so I can use the cover as a stylus, it's a bit flimsy but still works well and the screen don't get all smudgy.
OnShape is an online CAD tool that runs in the web-browser, it's free for non-commercial use (all drawings are public with free account). You can export files for several popular CAD packages.

Re: nano cases

#653
Edited

Excellent design! I like the protective mounds around the power and jog switches.  And of course, you can never have enough storage.
Personally, I would have put the storage on the end opposite the sma connectors just so it would still fit a shirt pocket but that's just me. 
What design apps will work with the CAD model... nevermind, it's standard STL files. Already playing with it!

Larry

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On Wed, Jul 31, 2019 at 06:38 PM, <ornotermes@...> wrote:
I made a case for the white one, it's a bit fiddly (washers and such) to mount
because i added som distance to the back PCB as the battery was a bit cramped.
Over all, it's pretty good and adds good value. I looked at using light pipes
but it wouldn't work out well, but print in a (semi) transparent plastic and
you can see the LEDs through the walls.
It's licensed as CC BY-SA and the CAD models (OnShape) is published so go nuts
with it and make it useful to your specific needs.

Re: nano cases

#652

I made a case for the white one, it's a bit fiddly (washers and such) to mount because i added som distance to the back PCB as the battery was a bit cramped.
Over all, it's pretty good and adds good value. I looked at using light pipes but it wouldn't work out well, but print in a (semi) transparent plastic and you can see the LEDs through the walls.
It's licensed as CC BY-SA and the CAD models (OnShape) is published so go nuts with it and make it useful to your specific needs.

Re: Smith chart impedance printout

Lapo Pieri

#651

Hi Serge,
00:20 Wed 31 Jul 19  , Serge wrote:
My +1 to display as R +/-Jx.:-)

Even will be ideal to display as line graphics: SWR, R and JX !
As some antenna analyzers done it, Rigexpert etc...I haven't had time to work on it but it could be done, I'll take a look

Lapo, IK5NAX

Re: Possible location of latest VNA source code??

Lapo Pieri

#650

18:26 Tue 30 Jul 19  , hugen@... wrote:
Since powering up from DFU mode, aic3204 fails to be initialized at power-on, which will cause I2C abnormality. Re-powering up will make aic3204 normal initialization work normally.Ok, so it's what it has to do, no instability. Fine. One can wait some
seconds or just disconnect the battery when working on fw.

Thank you

Lapo, IK5NAX

Re: Free gift with NanoVNA

#649

I was hoping for a Panda, but all I got was a properly working VNA. Everything was there but instructions. Thanks to this group I knew what to expect. 
Thanks 
Stuart K6YAZ
Los Angeles, USA

Show quoted text

On Jul 31, 2019, at 1:42 PM, vbifyz <3ym3ym@...> wrote:

Same experience here, eBay seller xspar. The letter in the "free gift"  package had the real tracking number. The unit arrived 10 days later.
I think it is some trick to game eBay, maybe to show them faster delivery times to improve their rating or something.

Re: Free gift with NanoVNA

#648

Same experience here, eBay seller xspar. The letter in the "free gift"  package had the real tracking number. The unit arrived 10 days later.
I think it is some trick to game eBay, maybe to show them faster delivery times to improve their rating or something.

Re: DL2SBA j-vna software

#647

Yes, I agree a dynamic real time read would be far better. At this point my feeling about their PC software... quite acceptable. I have used it to do real time alignment of filters and impedance matching. Can it be improved. SURE. In another post, the LabView interface looks quite good.

73' Alan

________________________________
From: [email protected] <[email protected]> on behalf of tuckvk3cca <tuckvk3cca@...>
Sent: Wednesday, July 31, 2019 6:36 PM
To: [email protected] <[email protected]>
Subject: Re: [nanovna-users] DL2SBA j-vna software

Possible solution can also be read by Excel, but not the same as driving nano dynamically under vna-j which has far more advanced features.Sent from my Samsung Galaxy smartphone.
-------- Original message --------From: alan victor <avictor73@...> Date: 31/07/2019  20:21  (GMT+01:00) To: [email protected] Subject: Re: [nanovna-users] DL2SBA j-vna software The file format expected from nanoVNA PC software is Touchstone. Hence, once read by their software, the file can be saved as well re read by any other routine. For example Keysight (hp) APPCAD. So if the DL2SBA SW will not read the nanoVNA direct, you could come in via another path.Alan________________________________From: [email protected] <[email protected]> on behalf of tuckvk3cca <tuckvk3cca@...>Sent: Wednesday, July 31, 2019 1:39 PMTo: [email protected] <[email protected]>Subject: [nanovna-users] DL2SBA j-vna softwareAnybody knows if I can use the above java based software with my nano. I find their pc interface rather primitive.Sent from my Samsung Galaxy smartphone.

Re: DL2SBA j-vna software

#646

Possible solution can also be read by Excel, but not the same as driving nano dynamically under vna-j which has far more advanced features.Sent from my Samsung Galaxy smartphone.

Show quoted text

-------- Original message --------From: alan victor <avictor73@...> Date: 31/07/2019  20:21  (GMT+01:00) To: [email protected] Subject: Re: [nanovna-users] DL2SBA j-vna software The file format expected from nanoVNA PC software is Touchstone. Hence, once read by their software, the file can be saved as well re read by any other routine. For example Keysight (hp) APPCAD. So if the DL2SBA SW will not read the nanoVNA direct, you could come in via another path.Alan________________________________From: [email protected] <[email protected]> on behalf of tuckvk3cca <tuckvk3cca@...>Sent: Wednesday, July 31, 2019 1:39 PMTo: [email protected] <[email protected]>Subject: [nanovna-users] DL2SBA j-vna softwareAnybody knows if I can use the above java based software with my nano. I find their pc interface rather primitive.Sent from my Samsung Galaxy smartphone.

Re: DL2SBA j-vna software

#645

The file format expected from nanoVNA PC software is Touchstone. Hence, once read by their software, the file can be saved as well re read by any other routine. For example Keysight (hp) APPCAD. So if the DL2SBA SW will not read the nanoVNA direct, you could come in via another path.

Alan

________________________________
From: [email protected] <[email protected]> on behalf of tuckvk3cca <tuckvk3cca@...>
Sent: Wednesday, July 31, 2019 1:39 PM
To: [email protected] <[email protected]>
Subject: [nanovna-users] DL2SBA j-vna software

Anybody knows if I can use the above java based software with my nano. I find their pc interface rather primitive.Sent from my Samsung Galaxy smartphone.

Re: Possible location of latest VNA source code??

DMR

#644
Edited

Hi Hugen, 
I added a delay of 50 milliseconds to the code, the hangup was gone.
Does the calibration function now work with such a delay?

void adc_init(void)
{
  rccEnableADC1(FALSE);
  ADC->CCR = 0;
  ADC1->CR |= ADC_CR_ADCAL;
  while (ADC1->CR & ADC_CR_ADCAL);
  chThdSleepMilliseconds(50);
  ADC1->CR = ADC_CR_ADEN;
  while (!(ADC1->ISR & ADC_ISR_ADRDY));
}

My PCB Version 3.1 NanoVNA

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