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Can you switch off the calibration and do a full range scan with nothing connected. This will show if there is a hw problem -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files:

Hi Bob, a general point: Some (early?) firmware versions for the NanoVNA "only" allowed operation up to 900 MHz. I suspect you have one of those - and that you will need to upgrade your firmware in

Hi Bob, It is true that when one has several hours, one does not know the exact time. Anyone with multiple VNAs doesn't know which one is accurate - maybe because everything is relative? :-) :-) :-)

no ideas on this then folks?

Without display user define sweep points useful. Raw data also interesting or/and better calibration model on instrument. Currently no way to define precision oslt model on nanova. Many times coaxial

YES IT IS HF,73

The firmware can be configured for up to 201 points, but there are still a few minor UI glitches we need to fix before this can be advertised. Sweep rate is by default 100 points/s, and this is what

#86": Two Notes On #86': UPGRADE : On the Results of Measuring Two-Ports Using Only [NanoVNA] Channel [CH0] or a [LeastVNA] 16 December 2019 - /g/nanovna-users/message/8278 Note 1 At

@Gary O'Neil, N3GO - 18 December 2019 /g/nanovna-users/message/8386 Dear Gary, Thank you for the interesting suggestions. We will prepare and send you two copies - the one with

How many sweep points? and how fast full-range single sweep?

It does appear that the cable is somehow involved.? Be all that as it may, my problems are not stopping me from getting good use out of the units.? I am repeatedly amazed at the accuracy and

Update.? I recalibrated and now the Smith display is okay.? Maybe I goofed and mixed up the calibration fixtures. Both units have a problem where they turn themselves off without provocation.?

I had your second problem when viewing the NANO on its screen while connected to the PCwith the USB cable. Once I removed the USB cable, all was as expected. The first: I've never been able to get

I have two nanoVNAs each with a different problem. One refuses to accept any frequency above 900 MHz. I think I have had that aspect working before but now am not so sure. The other gives me a bad

well the antenna is my tv mast,total lenth about 45ft,its shunt fed thru a loading coil made from brake pipe tubing,the ground/counterpoise is all my copper plumbing,i live in a flat in a conservation

Hi all,ive got strange readings on my modded vna,the mods are sma to bnc adapters on it,ive calibrated it with homebrew load and shorted termination and used a lenth of rg-58u cable with bnc fittings

I presume this is for HF. A vertical antenna is not a differential source/load and should not be fed with a balanced line - your 600-ohm ladder line. A vertical of 1/4-wavelength long should be

well i was looking at the losses using coax,the ladder line is homebrew as i had a lot of enameled copper wire,thats why the 9-1 unun is by my tx,as then the atu matches it ok,whats the best way to

Bigger question is why a balanced 600 ohm line to an unbalanced vertical which typically is low impedance? Short form is the 19" of wide at most will skew the data as your moving the VNA 18 inches

Hi all,ive a nanovna with bnc conectors,i want to connect it to my homebrew vertical to play with the base loading coil,currently i have 600 ohm ladderline with one leg going to the loading coil and