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Thanks Alan, I just registered & downloaded. Looks very interesting & useful reference. 73 Mike

Hi Frank, The 4 trace or 4 track vs. 2 trace or 2 track thing is a FIRMWARE THING. All of the nanoVNA devices as far as I know have the same hardware and share the same system schematic. Although

never mind. Just got back from vacation, and didn't read the other posts

Here is a paper, just came out now in Microwave & RF publication...July 2019 https://www.mwrf.com/test-measurement/make-accurate-impedance-measurements-using-vna-pdf-download An excellent treatment

Is the 4 trace a firmware thing, or hardware thing Frank

Hi Alan You've obviously got a good one there. I have been finding odd calibration issues and finally worked out it mine is happier up to 450 MHz and not going too low either, although the issue may

Thanks, I try that.

Hi Mike, Here is a 3 pole helical filter centered at 465 MHz. The filter is "C" coupled so the skirt on the high side rolls more gentle than low side. The insertion loss and return loss as well

Yes, you have the 2- track firmware and you are going to have to update the firmware to the 4 track firmware. See your manual or get a copy of the pdf manual. A link to the manual is here on this

Hi all, I bought a nanoVNA on ebay like on the attached photo. And as you can see on the photo, there are 4 traces on it. I only have two. And I have no idea I have to make the other 2 visible. In

Also please add to save selected COM port number in software!

Hi Hugen, Please add frequency markers and label boxes for parameter values be displayed on the NanoVNA Software. Thanks, neb

Opps note ... After making the firware backup the device reboots .. so you need to put it back into DFU mode.

Ok so tonight was flash the firware night :) It took me longer than it should of but I got there in the end :) I am using Ubuntu and to do this you need the dfu-util pacakger so go ahead and $sudo

Hi Mike. I did extensive measurements on narrow as well wide band filters. Also a number of antenna out in the field. I have compared results with VNA big box, Vector Z Meters and the results at HF

thanks everyone i got the firmware loaded but it is not working must be faulty i have arranged to return to the seller thanks herbie

Hi Alan Agreed that comparison with a big VNA would be v interesting. I'm not aware that any of my friends have one of those though. Mind you at this price I wouldn't expect too much. The frequency

Hi John, Mike, Several folks have done various measurements including myself. Measurements and records between big box VNA and the nanoVNA would be of interest. However, that said, my best guess is

Hi. Got my from Lusya/Aliexpress on the last week. Its in black color with battery and USB-C connector. Was ordered in begin of June. Just one note - included 50 Ohm dummy load looks like was

Yes, the various clones 'should' work the same way. As for placing your unit into DFU mode, the contacts only need to be shorted at power-up, that is why I soldered a small button switch there. After