Observed arrival · 2026-10-01

VNA Air: NanoVNA, untethered

vnaair.com Visit website

Editorial interest 75/100 Selection signal · not a rating of the site

An ESP32-S3 bridge sends NanoVNA measurements to a browser or iPhone app for viewing antenna sweeps and SWR.

Landing page captured for the 2026-10-01 issue.

For: NanoVNA users tuning amateur-radio antennas
Worth noticing: The XIAO board needs a USB-C OTG splitter to take power while passing data to the NanoVNA.

Field notes

The firmware installer is described as writing the bootloader, partition table, and VNA Air firmware, with a desktop Chrome or Microsoft Edge browser specified in the setup instructions. The hardware notes distinguish the compact XIAO board from a full-size development board: the latter needs separate connections for power and NanoVNA data. The site also identifies its Amazon affiliate links and separates those from the directly sold kit.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

$PaidCommerce or pricing visible

✦PrettyNotable craft visible

◎NicheUnusually specific use

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