I am super pleased to be able to tune my antennas now! Being able to verify your designs and even better verify the quality of 3rd party antennas is great for selecting optimal performance in meshtastic and other SDR applications.

According to the listing this is the specification of the VNA:
NanoVNAF V2 Antenna Analyzer
4.3inch NanoVNA V2 Vector Network Analyzer
3G Upgraded Version
NanoVNA with 5000mAh
Measuring SParameter Voltage SWR Phase Delay Smith Chart

Apparently there is a version that jumps up to 6ghz, that is double the price. Could be useful if you need that range.

I am going to have a lot of fun trying all manner of designs now!

Amazon has these, it is where I got this unit:

Amazon UK: https://amzn.to/3SENnMk
Amazon USA: https://amzn.to/49a4ATX


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Thanks you lovely people, and keep on tinkering!