The NanoVNA is a new low cost community developed VNA with assembled units coming out of China for <$50.
This article documents a task to perform a VSWR sweep of a UHF mobile antenna.
The nanoVNA-H has firmware NanoVNA-H_20191018.dfu installed.
The instrument was OSL calibrated for reflection at Port 1 (Ch0 is nanoVNA speak, convention means little) for 100-500MHz.
A sweep was then performed from 400-470MHz, forcing some interpolation of the calibration data.
The nanoVNA was configured for VSWR and Smith chart displays, much as you would to use it stand alone, but I did have it attached to the computer to capure the display (it seems it cannot be saved for later playback).
Above, the captured display. The results are pretty much as expected, no surprises there. Continue reading nanoVNA-H – mobile UHF antenna VSWR sweep