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Here is a YouTube that shows how to use the NanoVNA as a spectrum analyzer. https://www.youtube.com/watch?v=GX1qN0ywsSs So it can be done, but the results are not usually good enough to ensure

NWDZ board, like it says in the graphs. All calibrated on the same board with a single cable, as stated. And results were repeatable; I ran it several times. Are the board standards 100% accurate? Who

Maybe, but even at the low price, I can't see someone blowing up the device if we could prevent it. However, as I've stated before, experience is the best teacher. Dave - W?LEV wrote: -- *Dave -

Spoilsport ?

Roger TU for the reply I wish i understood what you are referring to? I went to the OneofEleven site and it is in GitHub I dont see an executable file which I could run. Darn, Your knowledge far

Ed, In a previous post I asked you which RF Demo board you were using. I took a look at both models that are being sold and from the photos it looks like one has a better layout of the cal loads for

To put things very bluntly, the NANOs have no place around a transmitter, even 1 watt. It's circuitry without power, yes, but not at power. Dave - W?LEV wrote: -- *Dave - W?LEV* *Just Let Darwin

Have you tried a Clearconfig 1234 from the USB Console using TeraTerm or the OneOfEleven NanoVNA app? It is discussed in the Wiki for this group. Once cleared do a Touch Cal, test Touch Cal and then

My beautiful unit suddenly started to just start drawing lines all over the screen I hv recalibrated it several times.. Something is wrong as it was working fine. Question is there a reset ?? Is there

Since you’re playing with transmitters, a dummy load is an indispensable tool. If I were you, I would stop and make one before continuing with the pixie. It’s simple enough to make one if you have

I have measured electrolytic capacitors with my nano and they are woefully bad at high frequencies.? Now that I have acquired a nanoVNA that can go down to 10 kHz I plan to do some testing to see if

That makes no sense whatsoever.

Never........NEVER.......rely on an electrolytic as a bypass for RF energy!!!!!! Use series resonance to your advantage. Chip, N6CA learned that lesson from (deceased) Gary Frey, W6XJ, in the 1970's.

Ed there are two versions of the RF demo board and at least 3 manufacturers. The test positions are different between the two. Photos of each attached. You can see that positions 7 and 8 on the NWDZ

Good to see that they show the parallel resonance between two different bypass caps! But too many circuit designers aren't aware of this.

And what's the best bypass cap? Well, a single, plain, cheap aluminium electrolytic! Attached is the impedance plot for a 47?F, 25V electrolytic cap, measured with lead lengths compatible with

Here is the phenomenon I referred to in a previous post in this thread. [image: image.png] This paper is written by Cadence and can be accessed at:

And since it's sunday and I have time for playing with the NanoVNA, I made measurements to show all of you the effect of placing bypass caps of different value in parallel. Attached are the impedance

Dave, What lead length did you use for that test????? After my last post I grabbed my box of 100nF capacitors, fired up the NanoVNA (works well even without warming up!), and measured two dozen of

It has been stated, by multiple members of this group, that due to hardware deficiencies (port 2 is not a perfect 50Ω) and lack of 12 term error correction, the "S21 method" can't be used to measure