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Christopher, in air—strictly vacuum—205 ps is equivalent to about 60 mm, which is not so far off the length of the F-F adapter that you had removed. The numbers, when all is going well, tend not

You need to use Device manager to see if a COM port is active for your NanoVNA. If it isn't there you need to get it installed somehow. The method depends on which OS you are using. Once you can

Hello, I SOL calibrated my NanoVNA using a 30cm cable + F to F SMA coupler and the SOL end pieces. I removed the coupler and attached the 30cm cable to a ~5cm 50 ohm coax cable soldered to the input

There are two Android apps for updating FW on the TinySA'S and NanoVNA H and H4's. 1- StmDfuUsb 2- StmDfuBlue for those who have installed bluetooth modual. Both will install dfu, bin or hex files.

I think I have finally gotten something installed to flash new FW on my NanoVNA-H. I installed STM32CubeProgrammer on MacOS Ventura. I tried, unsuccessfully, on Windows 11 under VMWare Fusion. In

I had a 40 meter dipole at 7 feet above ground. Straight run no bends. At 7 feet, easy to clip the vna on and take a measure. Better than 20 dB return loss at 7.050 MHz. At 10 W in, first contact was

The trapezoidal loop was much lower 5m at one end 3m at the other compared to the doublet which is 10m away. The objective was to validate the existence of NVIS propagation on 40 m. A priori, at the

Dear Roger, The situation is: None on com ports menu and no any list. The next menu: "Disconnected" Looks like no com ports or Windows 10 can't see the program. Best regards, Stefan Dimitrov

Francois Losing 10 dB is HUGE for a closed 40m “loop” compared to a 40m dipole (doublet). That makes no sense. Something is wrong - bad coax, mismatch, …. ? Neither of my 40m antennas is showing

This 40 m closed loop (140 ft) has only been in operation for about two weeks. So far, it does as well as my simple 1/2 wave dipole (at same height). I found each of these four graphs complimented the

Back to this original statement of the problem: For SWR measurement, the 1.1.01 software build should work fine, so you may not need to upgrade. There are lots of new features in the newer versions,

David, I had a similar problem. DFUseDemo was loaded with the Bootloader driver which I use with STM32 CubeProgrammer for my Malahite DSP2 receiver. It uses the bootloader mode to update firmware.

StmDfuUsb app for Android... Istvaan

This is a Windows app what made DisLord... - start the exe file after download, search "upload VNA firmware" button then choose the "NanoVNA H4 v.1.2.24" button for your H4 device... Yes, possible

- sorry on the picture just the dfu file - but You can also download the app in the same way.

You can see the picture attached

Thank you for the link, but when I tried I received this message: 404 - page not found The main branch of NanoVNA-App does not contain the path Win32/Release*

if You see STM32 BOOTLOADER, - then You can use the app for fw upgrade. - You do not need anything else, firmware included:

Istvaan, I went to the URL and received this message: (Sorry about that, but we can’t show files that are this big right now.). Can you tell me about the app? Will I use it from my cell phone? Will

I did not know there was an app. I went to the URL and it says that a file this large cannot be viewed at this time.