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When I am constructing an antenna, I have been using this device to plot the swr in my shop. I usually set a wide enough bandwidth to easily see the dip at resonance. In the shop, connecting this

any of the nanovna v2 models .. or litevna 62/64 dg9bfc sigi Am 06.02.2025 um 02:41 schrieb CLIFTON HEAD via groups.io:

If your main application is for ham band use, from HF to VHF/UHF (440MHz), save some money and get the H4. If you need good accuracy on bands above the 440MHz band, and above 1GHz, I would choose one

My Suggestion is https://nanovna.com/?page_id=121 Do your research. you want a device based on the Open Firmware, you want a device that supports the software on GitHub. Most of the devices are made

Any of them. The ones with a bigger display are easier to read. But all of them can do what you’re looking for. The other thing to look at is frequency range, some have a wider frequency range on

I changed the driver and problem solved! ??? Thank you! ??? Mark Jordan, PY3SS

What is a good NanoVNA to buy for do antenna reading like SWR, VF and Length of coax cable type work. Also, location of short in the coax..

I made the mistake of going down the measuring Q rabbit hole.... VE2AZX QEX article on different methods --> http://ve2azx.net/technical/Q-FactorMeas_on_LC_Circuits.pdf VNWA discussion on the topic

I discovered the problem -- it is my SD card. If I remove the SD card the NanoVNA operates normally (without changing firmware). I tried a different SC card and the problem returned. So, I need to

All, The extra copy of QEX has been spoken for. DaveD KC0WJN [email protected]> wrote:

Making the turns closer together increases the resistance, because of proximity effect (like skin effect, but from an adjacent conductor) - it squeezes the current to the inside and outside of the

Interesting calculation, Jim. Your conductive tube is very descriptive, It points out that when designing an inductor, one should use the biggest wire that is consistent with the mechanical problems

Does anyone want a copy of the January/February 2025 issue of QEX? The ARRL sent me two copies. It has the tinySA tracking generator design article in it. Of so *respond to me privately* at kc0wjn at

NanoVNA App need use DFUSe driver for device in DFU mode, by default windows install driver for STM32CubeProgrammer (this driver allow flash in this software, but not work for NanoVNA-App or

Tried to update my H4 with the app and got this error: Opening \\?\usb#vid_0483&pid_df11#206a31562031#{a5dcbf10-6530-11d2-901f-00c04fb951ed} ?open failed Device Manager shows NanoVNA-H4 is connected.

Before re-installing firmware, I would try a 'clear config' (under expert settings). That will help reset internal parameters, in case something amiss there is affecting this. Regarding new firmware,

As it should! Dfu is *NOT* a COM port, and requires it's own driver which is provided with the app of your choice. -- Sent from my Android device with K-9 Mail. Please excuse my brevity.

I can't get the device to connect with a Windows computer in DFU mode. I can connect in normal mode with COM4. As soon as I put the device in DFU mode it disconnects and COM4 disappears from Device

I have a NanoVNA-H4 which has been working for months. Today I needed to test a broadcast band filter and when I try to enter any number on the number screen (for setting stimulus start/end etc.) the

Hi Coyote, As others have already mentioned having a good choke on the feedline is the key. When operating mobile (40 and 20 meters) with a ham stick or hustler mobile antenna I use approximately 9 of