开云体育

This version was ported by Ken Liao (AA6KL). You can check the following links to learn about the development process.
/g/nanovna-users/topic/33107519
/g/nanovna-users/topic/61079748



We are still selling through Alibaba, and bulk purchases will be even more favorable due to postage.


hugen

LOn Fri, 10 Jan 2020 at 07:16, <hugen@...> wrote:

This version was ported by Ken Liao (AA6KL). You can check the following

links to learn about the development process.
/g/nanovna-users/topic/33107519
/g/nanovna-users/topic/61079748



We are still selling through Alibaba, and bulk purchases will be even more
favorable due to postage.



hugen

Can you send a *PayPal invoice* to someone so he can pay via PayPay? If
not, why not? A guy at my radio club wants one, but will not use
Alibaba.com

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

David,
A few of us have made purchases using Paypal. The procedure is to leave a message with Maggie King at hugen's Alibaba store that you want to use Paypal. She will send you her Paypal email. Once she receives the Paypal payment she will ship the product. Express delivery via DHL is an extra $10.

- Herb

On Fri, Jan 10, 2020 at 07:33 PM, Dr. David Kirkby, Kirkby Microwave Ltd wrote:

LOn Fri, 10 Jan 2020 at 07:16, <hugen@...> wrote:

This version was ported by Ken Liao (AA6KL). You can check the following

links to learn about the development process.
/g/nanovna-users/topic/33107519
/g/nanovna-users/topic/61079748



We are still selling through Alibaba, and bulk purchases will be even more
favorable due to postage.

hugen

Can you send a *PayPal invoice* to someone so he can pay via PayPay? If
not, why not? A guy at my radio club wants one, but will not use
Alibaba.com

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

Paypal is OK. If you need to trade with PayPal, please contact Maggie through Alibaba.


hugen

On Thu, Jan 9, 2020 at 11:16 PM, <hugen@...> wrote:

We are still selling through Alibaba, and bulk purchases will be even more favorable due to postage.


hugen
===========================================================

Basic specifications from the Alibaba store:

ABS case: 75mm x 133mm x 18mm (excluding protrusions)
Measurement frequency: 10KHz -1.5GHz
RF output: 0dbm (±2dbm)
Measurement range: 70dB (50kHz-300MHz), 60dB (300M-900MHz), 40dB(0.9G-1.5GHz));
There may be errors caused by nonlinear transformation of fundamental wave when using harmonic measurement.
Port SWR: < 1.1
Display: 3.95 inch TFT (320 x 480)
USB interface: USB type-C communication mode: CDC (serial)
Power: USB 5V 200mA, built-in 1950mAh battery, maximum charging current 1A
Number of scanning points: 101 (fixed)
Display Tracking: 4, Marking: 4, Setting Save: 5
Frequency Tolerance:<2.5ppm
Frequency Stability:<0.5ppm

Packing list
NanoVNA host (with 1950mAh battery) x 1
USB Type-C data cable x1
15cm SMA male to male RG316 RF cable x2
SMA male calibration kit - OPEN x1
SMA male calibration kit - SHORT x1
SMA male calibration kit - LOAD x1
SMA female to female connector x1
Type-c to Type-c cable x1

Notable changes:

RF output @ 0dbm (±2dbm) is higher than previous version
Measurement range above 900 Mhz is greater 40dB(0.9G-1.5GHz)
Larger display @ 3.95 inch TFT (320 x 480)
Better quality cables @ 15cm SMA male to male RG316 RF cable x2

Sample price is 60 usd.

- Herb

On Fri, Jan 10, 2020 at 09:32 PM, hwalker wrote:

Notable changes:

RF output @ 0dbm (±2dbm) is higher than previous version


- Herb

NanoVNA-H rev3.4 has been similarly modified, please check


hugen

When I try that using Firefox, I get a blank white window after hitting "Send inquiry now"

and, yes, I checked the agree with Alibaba box

73

Glen K4KV

Whats the total cost in gbp for sending 1 unit to the uk,ie vna inc shipping?

When I try that using Firefox, I get a blank white window after hitting "Send inquiry now" and, yes, I checked the agree with Alibaba box
==============================================

Glen,
On the right hand side of the page there should be an area that allows you to start a chat with Maggie King for Paypal purchases. You generally have to check back for a reply in a few hours after sending your request because of the time zone differences.

- Herb

Is this model the one with the Big screen or the Little screen ?

Thanks, Dick, W1KSZ
________________________________
From: [email protected] <[email protected]> on behalf of hwalker <herbwalker2476@...>
Sent: Friday, January 10, 2020 9:27 AM
To: [email protected] <[email protected]>
Subject: Re: [nanovna-users] We started selling nanoVNA-H4 using STM32F303CCT6 and 4-inch LCD

When I try that using Firefox, I get a blank white window after hitting "Send inquiry now" and, yes, I checked the agree with Alibaba box
==============================================

Glen,
On the right hand side of the page there should be an area that allows you to start a chat with Maggie King for Paypal purchases. You generally have to check back for a reply in a few hours after sending your request because of the time zone differences.

- Herb

On Fri, Jan 10, 2020 at 08:37 AM, Dick wrote:

Is this model the one with the Big screen or the Little screen ?
=======================================

Dick,
Current model has 2.8" screen. This model has 4" LCD. See previous messages for other differences (larger battery, etc.).

- Herb

I am glad that Hugen finally decides to release the NanoVNA H4 product, based on F303 and 4" LCD. He kept improving the design that I didn't know when he would be satisfied. Besides these two main features, there are some other improvements.

- RF front-end circuit on noise and sensitivity improvement.
- Power management circuit.
- Larger battery capacity.
- UART and two other GPIO pins are brought out to allow for Bluetooth, BLE, or any other connections.
- Jog switch sensitivity.
- Enter DFU by pressing down the jog switch at power-on. The LCD screen will be black at DFU mode. We have to do so since the software jump to DFU mode doesn't work for F303.

Initially, I was thinking of using NanoVNA to learn ChibiOS, but I disliked the flash size of STM32F072. So I contacted Hugen to discuss the possibility of replacing F072 with larger MCU, and invited him to join this forum. Here, Hugen received lots of feedback from the community. So he decided to make the F303 based NanoVNA with larger LCD. We contacted the NanoVNA's original author Takahashi san (edy555), who is an enthusiast in promoting RF engineering. He gave Hugen some advices. Currently he is planning a new project. Maybe it's another VNA covering higher frequency and better sensitivity, or maybe another useful tool. We will know soon.

For this project, I worked on the software porting to F303, used ChibiOS's ADC API for touchscreen, and ported the LCD display controller to ST7796S to support 320x480 4" LCD. Hugen carefully verified my codes and fixed some GUI issue and used larger fonts. He also incorporated some improvements and suggestions from GitHub users, including edy555, cho45, qrp73, Pmax65, etc.

The NanoVNA-H4 and NanoVNA-F took different approaches to provide larger screen. NanoVNA-F is an excellent product with larger, bright and high resolution LCD, larger battery, metal case, and is FreeRTOS based; while Hugen and I think that keep price low and continue to use software based on original NanoVNA code could better promote community involvement.

There are still places to be improved, such as the touchscreen responsiveness. Hugen and I will post firmwareupdate if we have any fix.

Kudos to Takahashi san for his innovative NanoVNA design and willing to share, to Hugen for his meticulous effort to drive down the cost and improve performance, and to everyone for your supports and suggestions.

73
Ken Liao, AA6KL

On Fri, Jan 10, 2020 at 08:42 AM, Ken Liao, AA6KL wrote:

" Kudos to Takahashi san for his innovative NanoVNA design and willing to share, to Hugen for his meticulous effort to drive down the cost and improve performance, and to everyone for your supports and suggestions. "

==========================================

Ken,
Thanks for the comprehensive rundown of the additional features. Also, don't forget to take a bow yourself for spearheading the larger screen size effort. As a fellow enthusiast, I will be following your involvement in this and whatever other projects you plan in the future.

- Herb

From

Quote.....

"NanoVNA is a very compact and portable vector network analyzer created by Mr. TAKAHASHI Tomohiro(edy555), which cost is very low. It is easy to manufacture and provide good measurement accuracy. Mr. Takahashi uses the GPL protocol to open source the NanoVNA software, aiming to attract more young people to pay attention to radio frequency and wireless. Based on Mr. Takahashi's software, I made simple modification to make it measure with odd harmonic. What's more, I have made a version that can measure 900MHz and shared it in the community, which has received widespread attention from the community. Later on, I started to mass produce NanoVNA. At the suggestion of Mr. Takahashi, I renamed my version NanoVNA-H. The community began to contribute new code for NanoVNA, new features were added, cho45 added TDR and screenshot functions to NanoVNA, and QRP73 helped to improve the driver of Si5351 and AIC3204. With more functional requirements being raised, the resources of STM32F072CBT6 are not enough, therefore, under a discussion with Mr. Liao(AA6KL) at /, he proposed the idea to replace STM32F303CCT6 with STM32F072CBT6. I provided Mr. Liao a NanoVNA-H test version with STM32F303CCT6. Thanks to Mr. Takahashi's early work, the porting was smooth. Because the STM32F303CCT6 has a faster SPI bus speed, we started to consider the display size problem which is widely complained by the community. After some selection and testing, we finally used a 4-inch LCD screen.

After discussion with Issues # # 14, we have now increased the measurement frequency of NanoVNA to 1.5GHz. With the larger screen, we have more PCB space for components and batteries. Therefore, we use a separate charge pump to power the mixer and add tantalum capacitors, which can further reduce power supply noise, and the 1950mAh battery can be used independently for more than 8 hours. We add DC dimming to the 4.0 inch full-view LCD screen, which make the view more clearly when used outdoors and more comfortable when used indoors.

In order to make it easier for geeks to create more possibilities, UART1, PC14, and PC15 are introduced on the PCB. Thanks to the manufacturing experience of NanoVNA-H, we made a new ABS shell for NanoVNA-H 4, which can effectively protect SMA connectors and switchs. Each set of NanoVNA-H 4 sold to the community is installed with a complete ABS shell. It is packed in a beautiful gift box, which can surely protect the NanoVNA-H 4 without being damaged during the long-distance express transportation. NanoVNA-H 4 maintains high degree of software compatibility with previous versions of NanoVNA. All software developed for NanoVNA can be used directly. Just note that with the larger LCD screen, the data returned by the “capture” command is twice as long as the original one, but the developers can easily modify the code for compatibility.

I'm selling the full NanoVNA at gen111.taobao.com, if you are an overseas user, you can purchase the hardware I made through alibaba. If you need to trade with PayPal, please contact Maggie through Alibaba. you can also design your own PCB by reference schematic, it should be noted that analog circuit partial shielding and isolation are important, the bridge part is strictly matched, if you need to use harmonic extension 300M or more measurements need to pay special attention."

Hugen - Nice work. I am looking forward to working with the improved version.

On the alibaba page, the four inch model is the more expensive of the two listed, correct?

Cheers, bill

On Fri, Jan 10, 2020 at 10:03 AM, bill K7WXW wrote:

Hugen - Nice work. I am looking forward to working with the improved version.

On the alibaba page, the four inch model is the more expensive of the two listed, correct?
======================================================

Bill,
I just ordered the new 4.2 version via Paypal by directly contacting Maggie King at the Alibaba page. The higher $75 cost is for express shipment by DHS. Maggie explained that DHS shipping costs have increased. The lower $60 cost is for free shipping via post (slow boat from China).

If using Paypal, don't press the "start order" button. Start a conversation with Maggie and she will send you her Paypal email address , send her the payment via Paypal and ask her to let you know when it is received. Maggie will send the shipment to the address associated with your Paypal account.

- Herb

- Herb

Dr. Kirkby,
I posted one day regarding safe payment with Alibaba.com
I am also not willing to enter my actual billing information!
I recently learned of I used this service to place my NanoVNA order and it worked fantastic! It does tie to your funding source but you can generate single use maximum value credit cards all day! I created a single use card that could charge me exactly once for a value up to the order total of the NanoVNA and the card dies. No further changes possible ever!

Maybe worth consideration

My only regret was waking today to find the 4” model now available for very little more money than what I just paid for a 2.8”

Good Luck Sir,
73 de Seth - W8FG

Did you get rid of that stupid switch?
Dave

On Sat, Jan 11, 2020 at 09:00 PM, DaveH52 wrote:

Did you get rid of that stupid switch?
======================================
Per developer and see attachment:

" - Jog switch sensitivity has been improved.
- Enter DFU (for firmware upgrade) by pressing down the jog switch at power-on. "

So no, the jog wheel switch is still present but usability is supposedly improved. Hopefully that means the switch is now interrupt driven. Looking for some of the first nanoVNA-H4 buyers to post feedback on this subject. I personally haven't experienced any switch related mechanical problems with the nanoVNA-H's that I purchased directly from hugen's Alibaba store (10 for classroom use). I can't comment on the quality of jog switches sourced by other clone manufacturers.

Gabriel Tenna White has said that her coming 3 GHz version of the nanoVNA will use push buttons instead of a multi-function switch. If the multifunction switch really irks you then that will be your best out of the box option.

- Herb

On Sun, Jan 12, 2020 at 01:00 PM, DaveH52 wrote:

Did you get rid of that stupid switch?
Dave

Multi-function switches still exist. In nanovna-H4, the plastic case can fully protect the multi-function switches, so it is no longer a problem. Unfortunately, our software is still not optimal, and sometimes the button requests cannot be processed normally, even if it is replaced with a button, it does not help. AA6KL is improving the software, and if the community has suggestions about the software, it can be submitted to him.

hugen