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I have a NanoVNA H4. One thing I like about recent firmware updates is that, when you save a calibrated frequency range in the memory, it then actually displays the frequency range that is stored.

"Can I upgrade the firmware and obtain additional functionality?" Yes. You didn't say how old your NanoVNA is, or its firmware version - but, if you carefully make note of its current version, find,

Right. The question should be "am I missing something I want to use right now or am I using something that has a bug and should be repaired right now." If you don't know what you're missing and all

As a 25yr veteran in sustaining engineering, the “should I upgrade?” question always makes me laugh uncontrollably. If you don’t know why you shouldn’t upgrade, the answer is always,

Great thanks.

I created an issue on GitHub regarding your proposal: https://github.com/NanoVNA-Saver/nanovna-saver/issues/517

Hi Victor, Thank you for your update and information. There are different ways to measure CMC performance as there are different 'lumped' component models of a CMC taking account of parasitic elements

Of course you should still upgrade to the latest. You will get bug fixes, performance improvements, and new features. FREE! 73 -Jim NU0C m2walter@... wrote:

A clasic way to explain this was to connect 2 ports with coax, connect the coax shields on 2 ports with a short piece of wire and try to measure the current in the wire but I like this graphic, it is

Hi Jerry, You're absolutely right. It's not all or nothing. A semantically better way to say it is: RF current always favors the path of least impedance. The degree of "favor" is divided between paths

The measure of a "good" antenna is how well it performs. When I lived in a house with a lot bigger yard a few years ago I had a 40 meter vertical full-wave loop antenna (~12 feet high and ~58 feet

You're correct. I was thinking about it and tried it: the NanoVNA does go to 900 MHZ. And all this time I thought that since the default stop freq that it 'boots up with' is 250 Mhz that it was not

Hello Ed, I have not much now to look into this, but this article: https://hal.archives-ouvertes.fr/hal-01886795/document Gives your method (Fig 3b and Fig 7a. So one can measure some aspects of the

it should go to 900 (3rd harmonic) or 1.5 g (fith overtone) dg9bfc sigi (sorry i can not help with fw cause i am a v2 user that has a clock to over 4g) Am 11.07.2022 um 18:44 schrieb m2walter@...:

Yes, indeed...... The measure of a "good" antenna is not SWR. Of course, a 1:1 in a 50-ohm non-reactive system is essential to keep the transmitter output stage happy, but does not measure how good an

I have an original NanoVNA: it only goes up to 250 MHz. Can I upgrade the firmware and obtain additional functionality? If the firmware can be upgraded which version should I load. Tks. Mark Walter

Thanks.

I build a deb package with the command "DEB_BUILD_OPTIONS=nocheck python setup.py --command-packages=stdeb.command bdist_deb". You need the debian package "python3-stdeb" (Python to Debian source

Yes, you are right, but how do you check radiated electromagnetic field ! Tell us how you do 73 -- F1AMM Fran?ois

be careful not to have a dummy load @swr1.1! what is important is the radiated power! so not only check SWR but also radiated electromagnetic field! 73 F6CNG Olivier [email protected]> a écrit :