In case you missed today's Northern California ARCE lecture, described below, I just posted it on YouTube, and you should have a look.
It's on the Northern California YouTube channel: https://www.youtube.com/channel/UCtSkra1IMWntUDBqDjNO4sQ
The video itself is at: https://youtu.be/4OGMy9_pljU
Any questions or problems, send me an email at arcencZoom@gmail.com.
-- Sent from my Linux system.