Nano VNA

There's a new kid on the block, and if you haven't noticed go buy one. It's the Nano VNA. A compact 50kHz to 900MHz network analyzer.

I have only just got to grips with this new toy, but already I can display my antenna SWR vs frequency. I get a best SWR of 1:2.8, so I must use my AutoATU, when I get < 1:1.5.

EXAMPLE

And here's an example using it to display the characteristics of 40m LPF I built from a kit.

The triangle marker is at the -3dB point, which shows top right as 8.3MHz for this filter.

MENUS

To get this display I did this

STIMULUS - START 2MHz, STOP 20MHz
DISPLAY - TRACE, turnoff all except Blue
FORMAT - LOGMAG
CHANNEL - CH1 THRU
SCALE - 10 x1