This video shows how to setup your NanoVNA to measure coax loss using an S21 measurement on a VNA. I show the setup and calibration process, as well as some actual measurements of a few lengths of RG174 and RG316 coax that I use for my portable (POTA) HF operating. More info on the custom NanoVNA stand here:
https://forums.qrz.com/index.php?thre...

00:00 Introduction
00:18 Credit and Inspiration for the video
00:54 Coax samples to be measured
01:24 Hardware setup for calibration and measurements
02:55 Setting up the frequency range
03:23 Running the Calibration
05:03 Setting up the Traces and Markers
06:54 Making the loss measurements on the samples of coax
09:28 Summary
10:39 Thanks given for the NanoVNA stand