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Manfred, Have you ever compared the Q readings measured by the old BRC-160 or the Hp 4342 Q meters against the Q reported by any network analyzer or even many of the older 4 terminal instruments from

Ariel, From your picture it is difficult to tell if the high Z secondary windings are connected together for a back-back config and what are the number of turns on the primary and secondary's?

Hi Larry, Yes, I have the H4 version. I also tried V1.0.38 and V1.0.26 but no change. For some reason with all these version mu unit will not scan. I wonder if there is some setting I can change via

Hi, Roger have shown two plots with increase of capacitance with frequency, as the leads become longer the capacitance seems grows. It is caused by inductance but as I understand the model of real

filename lengths are a common problem.? For instance some programs only have 64 or 32 characters for the filename (because they assume the files are in the directory that it's being run in, and who

Eureka!! Larry and Jim: Thank you for your generosity in giving me some good information and guidance which will benefit me in future endeavors. My good news is that by moving the dfu file to my

I probably need to clarify the plot - x axis is a sweep from 3-30 MHz. Y axis is s21 after I divided by 2 cores - loss per core. Ariel NY4G

Hmmm, I thought there was a section in the wiki on using a Mac to flash the firmware. Have a look at my edited user guide in the files section.? Look at chapter

What am I doing wrong? The chart I plotted from the nanoVNA into Excel just does not look right. This is the back to back method. Two cores, secondaries together, grounds together, and measure loss

I think you need dfu-util - HomeBrew and MacPorts do it. (base):~ jimlux$ brew install dfu-util 100 lines of stuff.. (base) :~ jimlux$ dfu-util dfu-util 0.9 Copyright 2005-2009 Weston Schmidt, Harald

Thank you Larry for the suggestions. I couldn't find anything useful in either Wiki or Files for this issue of "not a correct format". In the archives, I see that Harry Morton N4HBM suggested that

Windows emulation on a Mac is not 100%. You will be better off using the Mac natively to push new FW to the Nano.? Search the forum wiki, user messages and a few of the user guides for Mac specific

How do I solve this? I get an error message "This file doesn't have a correct format ." when I try to upgrade my NanoVNA-H. Background and details: This happens in the STMicroelectronic's DfuSe v3.0.6

Thanks. There's some interesting and useful info in your link. I think that good information soon gets buried on forums like this which is a shame. Also, I wasn't aware of the alternative software

Hi WB2AUQ, that all sounds good now. I had another play with the s2p file of the (big) stacked FT240 49:1 transformer. This includes the 110pF capacitor at the input. I put the s2p model of the

Now feel pretty stupid! I did the usual OSL cal and now I see much higher Z's with the port left open. Thinking back now, I was using Nanovna Sharp until about a year or so ago. I installed "Saver" at

Hi DiSlord, maybe ISOLN is not necessary anymore on V2-VNAs. But I didn't read about it. And isn't something wrong, if at the left side of display there are only two letters: C* and D ? Thanks for

Hi Larry, it's a NanoVNA V2_2 Hardware designed by 0w0Comm Version git-20200617-1a9a11d Build Time: Jun 19 2020 Kernel: None (?!?) Compiler: gcc Architecture arm Core Variant: N/A Port Info: GD32F303

My mileage varies. What seems particularly difficult is measuring an impedance consisting of a small resistance a large reactance, or the other way around. This is crucial, for example, to directly

Dumb question - you flashed the H4 firmware and not the H, right? There are binaries for both devices in the 1.0.45 archive.