NanoVNA (Tiny Vector Network Analyzer)

[David Hunt]

During one of the previous meetings a few members had NanoVNAs (i.e. Tiny Vector Network Analyzers). They looked really neat, so I purchased one (two actually) and loved it. I put together a write-up of my experience here (http://www.davesmotleyprojects.com/ham/nanovna/index.html). I also created a firmware upgrade guide using DFU files on Windows PC. That can be found here (http://www.davesmotleyprojects.com/ham/nanovna/load_dfu/index.html).

Enjoy,

[David Hunt]

The latest firmware displays battery level, but requires a diode (PN# SD103AWS) to be added in position D2. This diode was called D1 in the original schematics by edy555, and is D2 in the schematics provided by hugen79 (attached). After a little digging, it turns out that the NanoVNA designs being marketed today (edy555, hugen79, and clones) are based on the hugen79 schematics.

Technically then, if one wanted to buy a NanoVNA from the designer, instead of a cloned design, that would be here: https://www.alibaba.com/product-detail/Hugen-NanoVNA-H-New-item-Original_62342877955.html

I don’t have experience purchasing from this location. Does anyone else? It certainly looks like a nicely packaged product.

Note that NanoVNA-H is the designation worked out between edy555 and hugen79 to differentiate the new design from the original design. It appears that both designers are now supporting the NanoVNA-H design.

Regards,

 

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