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V2 Design
#nanovna-v2
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erik wrote,,,,
The v2 design is done. I have a prototype. Very good amplitude performance. Some phase noise and somewhat slower scanning compare to V1. But my prototype measures till 4.4GHz so I do not complain Data acquisition has some differnces due to single receiver design ================================================================= Erik, Good news and thanks for the update. Gabriel has been a little quiet lately. I thought she would be doing a little bit more promotional activity ahead of the product release. If you get the time and are not under an NDA agreement, a first-hand review would be appreciated. I 've always thought if the -V2 was not going to use a large display (>= 4") it should have been packaged like the NNWA and take advantage of a PC to get more data points per sweep. It would be interesting to hear what you think of the display and how the initial version of the software is working out for you. I also would like to know what you think of the dual generator design to eliminate the use of harmonics. - Herb - Herb |
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On Sat, Feb 22, 2020 at 02:07 PM, hwalker wrote:
Erik, Good news and thanks for the update. Gabriel has been a little quiet lately. I thought she would be doing a little bit more promotional activity ahead of the product release. If you get the time and are not under an NDA agreement, a first-hand review would be appreciated. ================================================================================================= Roger Need pointed out the following link to the version 2 manual on GitHub, . The following was posted by Gabriel on the eevblog group: " Designs are also released. There is originally one manufacturer who will be selling these, but they are on vacation until the flu is over. " I haven't seen a post showing what the retail unit will look like, but the native software (NanoVNA-QT) and manual appear to be in good shape. - Herb |
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Glen K4KV
Who is our group tech leader who is going to test it and give a report?
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73 Glen K4KV On 3/4/2020 23:13, Gabriel Tenma White wrote:
I've gotten news that it's started selling on taobao and tindie will soon follow; should show up if you search "nanovna v2" on taobao. |
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same here? cannot find it anywhere
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On 05/03/2020 04:13, Gabriel Tenma White wrote:
I've gotten news that it's started selling on taobao and tindie will soon follow; should show up if you search "nanovna v2" on taobao. |
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Did you actually find it listed on Taobao or are you attempting to buy through a seller that sold the older versions?
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On Thursday, March 5, 2020, 9:20:47 a.m. GMT-5, Salil Tembe <salil2106@...> wrote:
I reviewed the first version. I can test this one too. I'm trying to get it through my component dealer in Shenzhen. He is trying to get two for me. Unfortunately, the taobao seller isnt responding to the messages he has sent. -- Salil Tembe (Nuclearrambo.com) |
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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'.
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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. -- 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
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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'. |
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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 |
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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: |
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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!
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Randy NC8U On Mar 5, 2020, at 7:46 AM, computererds <foster.ryan@...> wrote: |
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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 |
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Gabriel,Is this the same Maggie that was selling the H4?If yes, can we send an email to purchase it?Thanks
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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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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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Can someone explain what does "S11 noise floor" mean exactly?
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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: |
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John Ackermann N8UR
I think S11 noise floor refers to the floor of the return loss that can
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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 ---- On 3/5/20 2:04 PM, Dragan Milivojevic wrote:
Can someone explain what does "S11 noise floor" mean exactly? |
Roger Need
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