I can hook up your radio so you will get 1:1 SWR and can't get out of your back yard... Many Motor homes the CB antenna is a little black robber spring about 18" long, if you can reach the towed you are doing good.
(Actually I have one of those in my basement It is for talking to folks I can actually SEE either in the rear view or out the windshield.. The main CB antenna is 3-4 foot N-G-P from Radio shack INSIDE the fiberglass Ride,, I plan to move it out later.)
Home is where I park it!