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Maybe you have a problem with the battery. I would open the NanoVNA and disconnect the battery. Check if it is working. Use a meter to check if there is voltage coming out of it and what it is. Also

You wrote in the title that the unit is: NanoVNA-H v3.5 ? If you have somehow managed to wipe the bootloader (highly unlikely) your only choice left is to connect to the micro directly, using a

How to remove the stored numbers in the recall/empty windows

Thanks. Clyde - but my unit is not -H; I did try the BOOTP - VDD reset, no good, and all the other sequences mentioned. Nothing lets me connect to the unit via USB-C. I do appreciate the response.

R&L was where I got my SAA2N. I also contacted them about the clone issue and I didn't get a reply back, that was 2 yrs ago. ________________________________ Sent: Saturday, March 15, 2025 5:33 AM To:

I got an email response from NanoRFE support with some concerning information. They suggested that the hardware version of my SAA2N "is a clone" and many users have reported issues with it. I was

@Dave : Thanks, 1.86:1 was before I put the PCB into its final plastic case. Then within the case it jumped to 2.6. That's when I calculated the corresponding matching values. I've put an 8.2nHload

I finally managed to implement renormalization for unequal port reference impedances. The images show unequal resistances for a 10.7 MHz Murata ceramic filter. I optimized them by hand for minimum

Further addressing small values of inductance: There is really no need to buy SM inductors which may or may not be apropriate. Small nH inductors can easily be made of short lengths of appropriate

Nico, So you have two issues here... Th first one is that you will have difficulty knowing what the impedance is near the matching network because your measuring system is affecting the results.

Nico, In your case the purchased helical is one half of the antenna. The other half is the "buried" side of the transmission line and the ground plane of your board. When making measurements of the

SUGGESTION: Forget about these "canned" solutions. Download and install SIMSMITH. https://www.ae6ty.com/smith_charts/ There is also a accompanying tutorial at:

It looks like the cal may not be taking. RESET......COMPLETE CAL.......STORE in a register. Go back and verify that the OSL displays as it should. If not, OPEN CASE....INSTALL PROPER LOAD......from

I have been using my nanovna SAA2N for months without issues, and I bought it from R&L who is an authorized distributer of legitimate Nanovna's. This morning my issue started after I calibrated the

Hello, In the files section you will find a process to recover from "White Screen Recovery". Follow it PRECISELY STEP by STEP!. If that does not work you could try, for the lack of a better term, a

The image that shows a SWR of 2.6 : 1 (the sixth image), all you need to do is add an inductor in series to cancel the -j 45.6 ohms. At 916 MHz that would be 7.9 nH. In reality, 1.86 : 1 is not bad

You can actually calculate the values of an L-Network's two components without knowing Q. It is sufficient to know just the value of the load impedance and the impedance you want to transform that

Roger, Thanks for this advice. I'll try it out tonight. Look at the picture and zoom it (not zoomed it does not show up properly), you'll see a blurred larger line around the feedline. This is the

L-network values with the nano and then with the AT-100M Pro automatic antenna tuner: I measured one dipole antenna of mine (antenna fed with 1:1 balun, and 72-ohm Belden 8222 twin lead) with a

I'm missing a lot of information to understand (in French) your participation. I remember the last line: A 3-piece Pi adapter can be upgraded to a 2-piece L adapter. If impedance matching is the