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The SAA-2 (NanoVNA V2) has a 2.8" screen which is disappointing...
Roger
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Re: Basics to look at when buying nanovna
hi Dave,
I am looking where and what to buy. One of the VNA's is for my friend at work, the other for myself.
We would both opt for the 1.5 GHz version despite the low dynamic range there. Probably use some SMA to N pigtails and built it in a cabinet of some sort. (so N type cal kit is needed)
There is a benchtop and some portable VNA's at work, but I have to borrow them in time etc. and they're never around on Sunday if you want to try something.
Did not know they came in different screen sizes? Well, I'm twenty years younger, but bigger is also for me better in this case :-) .
But it seems you can connect them to a PC which makes life easier :-)
br Jan PA3GSV
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Is this an optical illusion or is this any tiny lcd on the V2?
If so, Hugen, get busy and make us a 4" version. ;-)
Two steps forward, one step back.
73
Glen K4KV
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I think S11 noise floor refers to the floor of the return loss that can
be displayed; at this point the system noise overwhelms the output of
the directional coupler or bridge. Basically, it's the limit to the dB
of directivity you can get after calibration.
John
----
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On 3/5/20 2:04 PM, Dragan Milivojevic wrote: Can someone explain what does "S11 noise floor" mean exactly?
From the marketing perspective the product is a bit confusing. No battery
and no case but with a screen.
Makes no sense. Also no accessories. It would make more sense to ditch the
screen and add a proper case
like the rest of the "desktop" VNA or copy the current approach
(it is beyond me why most people want a tiny screen that has no purpose in
90% of use cases).
Anyway I think that they are wasting their competitive advantage (higher
performance) with lousy execution.
On Thu, 5 Mar 2020 at 18:59, <erik@...> wrote:
Spec as on taobao:
NanoVNA V2
3GHz second-generation NanoVNA vector network analyzer, based on OwOComm's
SAA-2 design, greatly upgraded performance.
specification:
Measurement frequency range: 50kHz-3GHz
System dynamic range (after calibration): 70dB (50k to 1.5GHz); 60dB (to
3GHz)
S11 noise floor (after calibration): -50dB (to 1.5GHz); -40dB (to 3GHz)
Scanning rate: 100 points / second
Number of scanning points (on the device screen): adjustable, maximum 201
points
Number of calibration points (maximum number of USB scanning points): 1024
points
Power: USB, 400mA
RF port: SMA (not RP-SMA!)
USB interface: Micro USB
Display screen: 2.8-inch TFT (320 x 240)
Battery: without battery , can be equipped with 1000-1800 mAh 3.6V / 3.7V
lithium battery, 6 * 40 * 60 mm, XH 2.54 connector
Show traces: 4, Marks: 4, Settings saved: 5
Computer software compatible: Linux, Windows (7 and above)
Operation Introduction
Tap anywhere on the screen to open the menu
Setting the frequency range with the STIMULUS menu
Calibration using the CAL> CALIBRATE menu
Price is 350Yan which is at current exchange rate 45Euro or 50$
No housing
--
NanoVNA Wiki: /g/nanovna-users/wiki/home
NanoVNA Files: /g/nanovna-users/files
Erik, PD0EK
|
Can someone explain what does "S11 noise floor" mean exactly?
From the marketing perspective the product is a bit confusing. No battery
and no case but with a screen.
Makes no sense. Also no accessories. It would make more sense to ditch the
screen and add a proper case
like the rest of the "desktop" VNA or copy the current approach
(it is beyond me why most people want a tiny screen that has no purpose in
90% of use cases).
Anyway I think that they are wasting their competitive advantage (higher
performance) with lousy execution.
toggle quoted message
Show quoted text
On Thu, 5 Mar 2020 at 18:59, <erik@...> wrote: Spec as on taobao:
NanoVNA V2
3GHz second-generation NanoVNA vector network analyzer, based on OwOComm's
SAA-2 design, greatly upgraded performance.
specification:
Measurement frequency range: 50kHz-3GHz
System dynamic range (after calibration): 70dB (50k to 1.5GHz); 60dB (to
3GHz)
S11 noise floor (after calibration): -50dB (to 1.5GHz); -40dB (to 3GHz)
Scanning rate: 100 points / second
Number of scanning points (on the device screen): adjustable, maximum 201
points
Number of calibration points (maximum number of USB scanning points): 1024
points
Power: USB, 400mA
RF port: SMA (not RP-SMA!)
USB interface: Micro USB
Display screen: 2.8-inch TFT (320 x 240)
Battery: without battery , can be equipped with 1000-1800 mAh 3.6V / 3.7V
lithium battery, 6 * 40 * 60 mm, XH 2.54 connector
Show traces: 4, Marks: 4, Settings saved: 5
Computer software compatible: Linux, Windows (7 and above)
Operation Introduction
Tap anywhere on the screen to open the menu
Setting the frequency range with the STIMULUS menu
Calibration using the CAL> CALIBRATE menu
Price is 350Yan which is at current exchange rate 45Euro or 50$
No housing
--
NanoVNA Wiki: /g/nanovna-users/wiki/home
NanoVNA Files: /g/nanovna-users/files
Erik, PD0EK
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Re: Basics to look at when buying nanovna
On Thu, Mar 5, 2020 at 09:02 AM, David Eckhardt wrote:
The -H4 covers up to 1.5 GHz where the -F covers to 1 GHz. The original covers to 900 MHz (which I also have). All are improvements over the initially offered units.
====================================================
David,
I think you need to upgrade your NanoVNA-F firmware to FW v0.1.1 as it extends the frequency coverage to 10 kHz - 1.5 GHz. I agree that that either the -H4 or -F models would be a better choices over the 2.8" NanoVNA-H.
- Herb
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Here is a pdf with the translation of the Taobao Web site listing for the SAA-2
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Re: Calibration connectors
Aleksander, great idea and it looks nice!
What's that base plate material? Do you notice any flexing of the SMA/Nano interface?
--
I_B_Nbridgema
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Spec as on taobao: NanoVNA V2 3GHz second-generation NanoVNA vector network analyzer, based on OwOComm's SAA-2 design, greatly upgraded performance. specification: Measurement frequency range: 50kHz-3GHz System dynamic range (after calibration): 70dB (50k to 1.5GHz); 60dB (to 3GHz) S11 noise floor (after calibration): -50dB (to 1.5GHz); -40dB (to 3GHz) Scanning rate: 100 points / second Number of scanning points (on the device screen): adjustable, maximum 201 points Number of calibration points (maximum number of USB scanning points): 1024 points Power: USB, 400mA RF port: SMA (not RP-SMA!) USB interface: Micro USB Display screen: 2.8-inch TFT (320 x 240) Battery: without battery , can be equipped with 1000-1800 mAh 3.6V / 3.7V lithium battery, 6 * 40 * 60 mm, XH 2.54 connector Show traces: 4, Marks: 4, Settings saved: 5 Computer software compatible: Linux, Windows (7 and above) Operation Introduction Tap anywhere on the screen to open the menu Setting the frequency range with the STIMULUS menu Calibration using the CAL> CALIBRATE menu Price is 350Yan which is at current exchange rate 45Euro or 50$ No housing -- NanoVNA Wiki: /g/nanovna-users/wiki/homeNanoVNA Files: /g/nanovna-users/filesErik, PD0EK
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How can I use a nanoVNA to test an active antenna
Hello all,
I'd like to check active (receiving) antennas from my pit, that is through the coax, to fine tune them (band pass filters, etc).
These antennas are requiring a bias voltage.
Is it possible with the NanoVNA?
What is the best method to do so?
Any pointer to some docs? Attenuators, how to calibrate etc.
I'm using active antennas schematics from Martin, G8JNJ (Thanks Martin). I believe he is member of this group. :-)
Check
Thanks in advance
Jean
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Re: Basics to look at when buying nanovna
What are your intended uses/frequencies?
I have both the -F and the -H4. Either are great performers for the
amateur. Personally, I don't like the small screen versions (my eyes are
73 years 'young'!). The -H4 covers up to 1.5 GHz where the -F covers to 1
GHz. The original covers to 900 MHz (which I also have). All are
improvements over the initially offered units.
All the NANOVNA offerings provide *far* more than the average 'antenna
analyzers' marketed into the amateur market. There will be a learning
curve if you are not used to professional RF design and measurements using
complex impedances and the Smith Chart. But they are more than worth the
energy and time spent learning about the 'nitty-gritty' of RF parameter
measurements.
Dave - W?LEV
<>
Virus-free.
www.avast.com
<>
<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
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On Thu, Mar 5, 2020 at 4:14 PM Jan PA3GSV <pa3gsv@...> wrote: Dear all,
I'm about to buy 2 nanovna's. What are the do's and don'ts to look out for.
Don't want to start a message chain, just looking for the basics, like
firmware version, the black nanovna has some shielding, etc.
Thanks in advance for any answers.
br Jan PA3GSV
--
*Dave - W?LEV*
*Just Let Darwin Work*
*Just Think*
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Basics to look at when buying nanovna
Dear all,
I'm about to buy 2 nanovna's. What are the do's and don'ts to look out for.
Don't want to start a message chain, just looking for the basics, like firmware version, the black nanovna has some shielding, etc.
Thanks in advance for any answers.
br Jan PA3GSV
|
Gabriel,Is this the same Maggie that was selling the H4?If yes, can we send an email to purchase it?Thanks
toggle quoted message
Show quoted text
On Thursday, March 5, 2020, 10:39:22 a.m. GMT-5, Gabriel Tenma White <owowowowo123@...> wrote:
Here's the link to the taobao listing:
Although if you are outside China I would wait for the tindie listing; it's supposed to be awaiting approval now.
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Ha! That is so much easier Randy, thank you. The 'thousand Yaun deposit' I thought it said must be a product of how badly I can read Chinese... On Thu, Mar 5, 2020 at 10:51 AM Randall Steffens II via Groups.Io <pomology= [email protected]> wrote: I have a Taobao account and don¡¯t read any Chinese. Just use the Google
Chrome browser and it¡¯s auto-translate function. It will automatically
translate well enough to make out what to do to set up an account. I was
not required to make any deposit at all to set up my account, certainly not
$150!
Randy
NC8U
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I have a Taobao account and don¡¯t read any Chinese. Just use the Google Chrome browser and it¡¯s auto-translate function. It will automatically translate well enough to make out what to do to set up an account. I was not required to make any deposit at all to set up my account, certainly not $150!
Randy
NC8U
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On Mar 5, 2020, at 7:46 AM, computererds <foster.ryan@...> wrote:
Thanks Gabriel! I'll wait on it showing up on Tindie knowing it's on the
way. I can't read enough Chinese to already have made an account on
Taobao--and it would be a little silly to put the $150 deposit in to make
one $50 item order :)
On Thu, Mar 5, 2020 at 10:39 AM Gabriel Tenma White <
OwOwOwOwO123@...> wrote:
Here's the link to the taobao listing:
Although if you are outside China I would wait for the tindie listing;
it's supposed to be awaiting approval now.
|
Thanks Gabriel! I'll wait on it showing up on Tindie knowing it's on the way. I can't read enough Chinese to already have made an account on Taobao--and it would be a little silly to put the $150 deposit in to make one $50 item order :) On Thu, Mar 5, 2020 at 10:39 AM Gabriel Tenma White < OwOwOwOwO123@...> wrote: Here's the link to the taobao listing:
Although if you are outside China I would wait for the tindie listing;
it's supposed to be awaiting approval now.
|
You made me wonder, so now it's also been tested with a vpn from HK and the PRC proper--still no results. Maybe someone can tell me what nanovna v2 translates to in chinese characters and I can find something. On Thu, Mar 5, 2020 at 10:19 AM dwabbit via Groups.Io <dwabbit= [email protected]> wrote: on a uk VPN cant find a thing closest vpn i can find is the
Philippines. i find some nanovna but not the version 2
On 05/03/2020 15:00, Larry Rothman wrote:
Most likely Chinese Gov't is filtering a lot of info passing through the 'Great Firewall of China' due to COVID19 concerns and this is
'collateral damage'.
On Thursday, March 5, 2020, 9:56:43 a.m. GMT-5, Salil Tembe <
salil2106@...> wrote:
Larry,
The seller in Shenzhen is able to see it listed but I can't view it here
in India.
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My seller just replied and will shipping 2 units to me by this weekend. Quite excited to get my hands on it.
--
Salil Tembe
(Nuclearrambo.com)
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on a uk VPN cant find a thing?? closest vpn i can find is the Philippines.? i find some? nanovna but not the version 2
toggle quoted message
Show quoted text
On 05/03/2020 15:00, Larry Rothman wrote: Most likely Chinese Gov't is filtering a lot of info passing through the 'Great Firewall of China' due to COVID19 concerns and this is 'collateral damage'.
On Thursday, March 5, 2020, 9:56:43 a.m. GMT-5, Salil Tembe <salil2106@...> wrote:
Larry,
The seller in Shenzhen is able to see it listed but I can't view it here in India.
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Roger Need
Jan PA3GSV
Nbridgema
