Hallo, ich habe das Problem das mein NanoVNA als USB Gerät erkannt wird und ich habe kein zugewiesenen COM Port. Somit kann ich mit der App auch nicht drauf zugreifen. Welchen Treiber muss ich für Win

I have a spreadsheet I wrote to calculate and design low noise amplifiers and power amplifiers with microwave FET's. It uses s-parameters. Some of the equations are huge. They involve adding and subtr

Hi all, found a Python library - https://github.com/Ho-Ro/nanovna-tools but unfortunately this one can not read all/selected files from the SD card inside the nanoVNA-H and H4. Anyone has a link to su

Hello You can install the driver on win 11 if you disable core isolation, you are putting your computer at risk of being hacked due to kernel level exploits, although for the amount of time it takes t

My earlier thought that it was resolved was wrong. Easily reproduces over night. Symptoms reported here, very much like mine. Rebooting the host computer (which I would think would reset the USB stuff

No, 12k is IF used in measure. So not possible measure on this frequency or it harmonics PS in H4 possible change IF in config-expert settings menu

Thanks, I did some more checks: power supplies on the pins of the various devices were ok, clocks were also present (except the 32 kHz, I guess it's used maybe only for the RTC during power down?) but

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, b

Yes, I suppose I do, no pin so open(no contact). Lesson learned! Thank you again, Muggs KC3UDZ

to be sure just connect open, short and load (with the cables/adaptors etc) that was used for calibration ... does it show a dot left right centre?? then calibration is fine and can be used ... ifg no

Thanks for the reply and information. I did recalibrate and saved them to SD. But the RECALL FROM SD menu item isn't there in 1.2.14. I rolled back to 1.2.0 for now. Regards

The additional sticker shock is (always) Sparkfun's shipping costs unless you spend 100 bucks with them. That alone keeps me from hardly ever ordering from them. I do enough work with u.fl's that I de

Not exactly cheap if you pull the UF-L socket off of your computer or radio motherboard. 73, Don N2VGU

Good point as well.

Read this https://coppermountaintech.com/optimizing-vna-measurement-speed/

Tom Thompson (W0IVJ) shorted out R93, a 10 0hm resistor next to the SD Card socket, to get his unit to write to the Micro SD Card. I tried this fix also and now the unit works perfectly. Thanks to all

If r93 is a 10 ohm resistor, try shorting r93. https://groups.io/g/nanovna-users/topic/micro_sd_card_issue/94630098?p=

Great, I had a similar experience while attempting my first H4 upgrade. As you say you must first CHOOSE the new firmware file to load the file into the DFU Demo program. Then select UPGRADE to actual

So, this gets weirder. This morning, without doing anything but leaving it off all night (plugged in, so charging as well), it came up just fine. I powered it off, let it sit, powered it back on and a

Please PM me. HOGALLEN aka Gary A. Smith 2150 East 575 North St. George Utah 84790 435 272-7077