5/2/2023 0 Comments NanovnaNewer versions have modified screens, firmware and enclosures. All the notes and resources here refer to the originally supplied versions. For more resources, including PC software, user help and firmware images click here and here. Firmware mods can be done using DFU-UTIL software to upload firmware. It will however perform quite well as a basic SWR meter. Firmware updates can take this to 1500Mhz but dynamic range is poor and measuring reactance is next to useless. We're not talking microwaves here, but a typical Nano VNA will work superbly up to about 450Mhz, and reasonably up to 900Mhz. The difference is really down to it's frequency range. They work just as well as all those high priced offerings. Something that once cost £50K is now £50. VNA's are not new, but they have previously been classed as being way too expensive the ordinary man. In 2019 the Nano VNA (vector network analyser) was launched.
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