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Wednesday, June 10, 2020

Alan Wolke W2AEW Explains the Vector Network Analyzer (VNA) (Video)



I told Alan that his video on VNAs was -- for me -- very timely.  The video popped up on YouTube on the day than my NanoVNA was being delivered.  TRGHS. 

Alan does a great job in explaining what the VNA does.  Particularly useful for me was his explanation of the VNA's ability to measure phase differences (through the use of directional couplers).  

I am having fun with my NanoVNA, happily measuring SWR and the bandpass characteristics of various filters.  Mine came with what looks like a guitar pick -- this is used as a stylus to hit the small boxes on the touch-screen.  A nice touch...   

I wish there was some good software for use with this VNA.  Apparently the nice software described by Joe Smith (yesterday's blog post) is quite expensive.  Is there a free alternative out there? 

5 comments:

  1. "NanoVNASaver" is brilliant.

    https://github.com/mihtjel/nanovna-saver

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  2. There is a Community version that is a free download, maybe Joe's program works with that. No VNA in my toolbox, so I don't know. Worth a look. Ed KC8SBV

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  3. Nanovna sharp works for me and it's free and intuitive to use.

    G4IIB

    ReplyDelete
  4. Yes VNASAVER is great but, doing al the things you can do with the saver Without the saver is challenging. I love the Nano, got the 4 version, need to work with it more, saw a great issue of QST using a T and coax and a capacitor to tune an antenna, and most importantly,,relied on the Smith Chart to do it. Not sure they had NanoVNA when this came out though, now with a dynamic smith chart you can do amazing things. The article was in feb 202 qst page 43

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