Great install and great video to go with it!
What is that other device mounted below it?
It appears to be a Yaesu FTM-400DR or FTM-400XDR.
FTM-400DR
Jon, will the RAM finger grip hold the SDS100 with the big battery?I prefer the RAM finger grip for the scanner cradle, with a ball mount attached to the back. It holds the scanner with a lot less play than a mic clip. And the scanner doesn't have to be in a case, so it can run a bit cooler.