Hi All, I am looking for suggestions/thoughts on automatic controllers for screwdriver antennas. What have you used? What don't you like? What do you like? I am thinking one that does RF sensing tuning may be best as opposed to the presets, or both options. The radio is a Yaesu FT-991A for now and I have a couple Tarheel screwdrivers. Right now I am running a Little Tarheel II but have a model 400 I use mobile also. My goal is to tune the HF bands without much effort. Over the years I have always used the up/down switch and watch SWR to tune. I don't want to be doing that going down the road. Its one thing to tune up when stopped, but I want to surf bands on-the-go and thats where a controller needs to come in - not just a turns counter button box, but an actual automatic controller that can put the antenna in the right spot without any interaction on my part (other than pushing a single button or keying up a constant carrier).