The si5351 is damaged. This NanoVNA-H4 may be a clone. I suggest you contact the dealer to replace it.

Both of these "H4" are not produced by me. You can see that there is no version number marked on the PCB, and the QR code is different from the one produced by me. The pictures shown by Aleksander wer

If the calibration piece you received is the same as Roger's, it means that this NanoVNA-H4 is manufactured by us and you can use the data provided by Kurt.

This is the test report provided by Kurt after I provided H4 OSL accessories and 6GHz VNA to Kurt. It can be seen that the effects of OSL accessories within 6GHz are satisfactory. The test information

The load attached to the H4 has been re-matched to perform better at higher frequencies. The 49.9 ohm load used earlier performed quite badly above 2GHz, but the new and improved load can get S11 belo

Yes, using binary data transfer, USB-CDC is no problem at all. But this is a completely restarted project. Jan developed this project completely independently. We can consider compatibility in the fut

Hello Herb, this 6GHz VNA is a brand new VNA independently designed by Jan. USB needs a faster speed to ensure that 1000 scan points can be transmitted per second. Jan uses a more efficient libusb com

We have been working closely with Jan and provided all manufacturing support for Jan's second version of the VNA design. The results so far are very satisfactory, but we still need to make some final

In order to show respect for the original developer, we mark the original developer information on the product. However, OwOCom recently released some instructions that it is not willing to support us

Yes, we installed microSD for the latest nanoVNA-H4 after DiSlord completed the microSD migration. Since we have not completed the modification of the shell mold and have not reserved an installation

Yes, they use the same PCB manufacturing. hugen@... From: Ash Date: 2020-09-04 15:35 To: hugen@... CC: nanovna-users Subject: Re: Re: [nanovna-users] SAA2N reviews Thanks Hugen. It is

Yes, this is Maggie's shop. hugen@... From: Ash Date: 2020-09-04 14:56 To: nanovna-users; hugen Subject: Re: [nanovna-users] SAA2N reviews Hi Hugen, Is this your product? https://aliexpi.com/W

We are very sorry, there are many countries where we have not found a more suitable logistics solution. This has led to many countries temporarily unable to deliver or need to pay too high logistics c

Yes, this is Maggie's shop.

I haven't sold any products on "Tindy"? Are you sure you bought our products?

The load of nanoVNA-H4 is designed according to 6GHz that S11 is better than -30dB. We can guarantee that S11 is better than -40dB at 1GHz. The 51 ohm resistor is matched in the laboratory, and we nee

Hello David, SAA-2N still uses the original SAA-2 PCB without any changes.

Hello Mike, the cost of using DHL to send to the US is about $25.

Hello OneOfEleven, we are evaluating whether our supplier can provide SMA connectors comparable to Amphenol. If possible, we will use better connectors in next-generation products.

Hello Rich, using DHL, you are expected to receive it before the end of August.