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Mike: 100kHz steps is pretty coarse resolution, some bands might only have 1 to 3 points with lots of wasted points between ham bands; you might want to take narrower sweeps of the bands you plan to

I was doing some modeling using SimSmith and measured values of the shack end of my 450-foot long doublet fed with (mostly) 450-ohm window line. I was not getting what I would expect, so I measured

It took pretty much my entire morning. But I have to admit that my morning started around 11 AM! ;-)

You get 2 out of 3 with the NanoVNA-H4. With the latest software you get 401 points and there is an SD card storage capability. On mine you have to file the case slot to access the SD card connector

I am preparing for portable operations once the weather gets warmer. I want to take along a nanovna to troubleshoot issues on the field. One important requirement is the scrolling and input control

Look like broken LCD module (or bad connection). Blue LED flash - mean normal scan, as i see your device worked, and can send data to CPU over USB. Problem in LCD module (or in SPI bus), try check it

I've put as many DFU files that i can find looking through the files section on here, put them into a folder and trying them one by one. Just for the fun of it and scientific

I must admit Richard, I thought I was going to brick this little device but up to now, I've not managed too. But I can get very similar results to you with the white screen. I'd keep at it until you

Not all will work on your device Richard from what I believe so keep trying. I did try some recently and had the same result as you. Flashed it manually and the white screen stayed there. Keep

Hi Richard, its an option when you run the NanoVNA-App software. This latest software has it built in. When you run the NanoVNA-App software and select the two points button at the top of the page,

all ok found it and 1.045 in files section here... tried both, loaded 3 times each and recycled power got the same result each time natta! nothing on the display... goo try

James where did you download it from...you got a link please

Manfred, I know it takes a long time to write such a detailed and informative post. Thanks for posting! Regards - Roger

This was a fantastic read! Thanks Manfred! I used type 43 material to wind a common mode choke for HF frequencies recently. It seems to give about 30 dB attenuation with small signal stimulus,

Barry Thank you for that wonderful line " Each time I give this talk, I learn more about what the hurdles are. I find, as a teacher, we can "say the words and answer multiple choice exams without any

Hello Gyula and thank you for the reply and the tera term and putty info. I’ve watched a couple of videos after posting too but thank you. I was just trying a few things out to try and resemble

Hi James, I think you choose the firmware versions based on your idea and meanwhile mix the firmware written for the 2.8 "and 4" (3.95 ") versions. Yet these should not be confused with each other

So it was :-) My apologies. Regards, Gregg -- VE6WGM

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What is the size of the mp4 file? -- W7BE Bob