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The problem for a beginner compared to the explanations is that a coaxial cable has two ends. It is necessary to specify which one: the furthest from Nanao-VNA. -- F1AMM Fran?ois

Correction: For the isolation calibration step, the 50 ohm load should be on the S21 port. If you have two of them, you can also put one on the S11 port. And as for directly on the ports vs at the

Stan, Thank you for the additional follow up. Options are always good. Andy

That's a pity and discouraging. Silly question: You are sure you pressed the button (and it made its contact) while switching on? Unfortunately, I can't really suggest anything else, except searching

Ideally there would be a 50 ohm load attached to both ports for the isolation test. If you don't have two, it should go on port 1, and in practice that will be good enough. For the second question,

Hello Raymond, I do have the manual for the?NanoVNA-F V2 and have tried a new USB cable and all your suggestions before with no luck, I want thank You for all of your help, I am a retired Electrical

I posted this question on another groups site and wanted to post it here as well to get your input on my question. I am testing a choke for attenuation and when I calibrate the Nanovna once at the

Yeah, page 39 of the PDF file, page 37 of the manual: Chapter "8. Firmware Upgrade". I think you mentioned that you tried an upgrade but it failed? Could you see communication between PC and NanoVNA

Hi Again, Actually, the firmware upgrade info is on page 37. Also, what version of firmware do you currently have? If it is lower than v0.2.0 you must upgrade to v0.2.0 first. See note on page 38. I

Hi, Suspect you may have a faulty USB cable or a charging only cable. Here is the link to the Sysjoint manual.

Andrew, I also found that there are apps you can download to your android phone to use it as a stand-alone local network hotspot (with or without any connection to the internet). No sim card needed. I

Hello Bob, the NanoVNA is not recognized on my computer as a U disk drive so there is no way that I can load the firmware, I read the manual and can’t find anything on Flashing the firmware also

Hello Raymond, I am unable to find the information in the operating manual on page 37 as you mentioned, the NanoVNA is not recognized on my computer as a U disk drive so there is no way that I can

The SAA-2 / NanoVNA v2 designer has stated that si5351 and adf4350 had better phase noise performance with a 24MHz clock, so that is what got used.

The datasheet summary info is sort of misleading. It says 25 or 27, but down within, it says min 25 max 27.

The 24 MHz clock in that NanoVNA product that this group is not about is likely used because it's easy to get a 48 MHz clock for USB from there. A simple frequency doubler can be used. The spec sheet

Thank You Raymond, I will try that.

Thank You Bob , I will try that.

Correction, the NanoVNA I have uses a 26 MHz TCXO, not a crystal.

I can’t speak to the designer’s original intent, but sometimes, you choose a starting frequency for other reasons. For example, you need to *program* the Si part before it can generate all those