This video describes the basics of how to protect the sensitive NanoVNA when making SWR measurements.

For those wanting to discuss this video, I started a thread. Feel free to make use of it.
https://www.eevblog.com/forum/rfmicr...

If you are interested in seeing how I characterized the small grill starter, watch the first part of this video:
   • The UNIT UT181A Datalogging Multimet...  

The latest documentation and software may be found here:
https://github.com/joeqsmith/NanoVNA_...

If you have comments or suggestions on the documentation, feel free to leave them on the EEVBlog site at:
https://www.eevblog.com/forum/rfmicr...

Characterizing crystals
https://www.eevblog.com/forum/rfmicr...

Attenuators
https://www.eevblog.com/forum/project...

My review for the NanoVNA V2 Plus 4 (demonstrates the new software as well)
   • NanoVNA V2 Plus4 Review, 4GHz VNA  

HCXQS Group's Tindie store
https://www.tindie.com/products/hcxqs...