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I made a simple little video about using the Nano as a spectrum analyzer... Might be of interest to some. Also showing off my RF test bench ;-)

You should understand NanoVNA can use as SA, but it one point bandwidth (on old firmware as in your variant) ~1kHz so you can see spectre in 100*1kHz = 100kHz span (can be bigger but then you can get more and more error)

If use last firmwares bandwidth can ajusted from 2k to 10Hz (also more fast sweep)

But main limits is points count and max bandwidth.

On Wed, Jul 15, 2020 at 09:08:32AM -0700, Michael Dunn wrote:

I made a simple little video about using the Nano as a spectrum analyzer... Might be of interest to some. Also showing off my RF test bench ;-)

Have you got links for the generator & attenuator?

Just search on Ali...

I got them a year ago. Links & vendors change...