I recently installed an Ameritron RCS-8V on the tower.
Wish I had done this years ago. One coax line into the shack for 80, 40, 20, 17, 15, 10 and 6 Meter vertical. One open switch to be used and it will be used!
I have gone from numerous coax runs into the shack to 3 at the current time. Sure makes unhooking during storms a lot easier.
The RCS-8V covers up to 250 Mhz. So you can run a 2 meter antenna on it if need be.
You will need 8 wire control cable from the inside switch to the remote switch. I used CAT cable for that hookup.