My coach has the worst radio reception of anything I have ever owned. It has a JRV212 radio and about an 18" rubber antenna on the roof. I don't know if the problem is with the radio, the antenna or the wiring and would like hear some other's experience before diving into this. Replacing the radio would be the easist but most expensive option. I have seen some indoor antennas advertised that are supposed to work well. I might be able to attach a longer antenna to the side of the coach somewhere. I hate to go with a long one on the roof, it would hit too many things.
I have already routed the cameras to permanent monitors so loosing the three camera feature of the 212 would not be an issue.