Brct203 and arlo I thought I would post an update on my Mio+ and my on going problem getting 18V to my multi switch.
Well yesterday I was doing yard work and I moved an aluminum panel that I have leaning against my fence to protect the pvc pipe coming out of the ground that has the coax running in it from my tv room receiver. To my surprise I see that years ago I had installed barrel connectors to extend the cables. I completely forgot about this.
The cable marked "C"( for c band ) now has new connectors and a new barrel connector( with rubber boots).
No problem with 18V horizontal switching now. I've since ordered some new barrel connectors with boots for my spares box.