You didn't say "signal" ... you said "they really need to move its frequency." That implies something different than what you are saying now.
I am not a mind reader. I answer based on what I see in the post.
If we are, as I presume from the context going backwards from your original post, that we are talking about 94.7/WXBK in New York/Newark, the former WNSH, that signal has been pretty much maximized to what is allowed by FCC parameters. I think your observation about few people knowing the station exists is likely more due to the station being religious (as WFME) for 47 years, plus about five years running Cumulus' classic Country "Nash" format before the format change under Audacy 3½ years ago.
It may well be that it's not the signal, it's that listeners don't think of checking 94.7 for anything other than the late Harold Camping's preaching. I looked at the signal contour and unless you are far away from New York City itself -- further south than Asbury Park, on the eastern end of Long Island, past Norwalk in Connecticut -- any signal issues are going to be terrain related and there's not much to be done about that. 40kW from Secaucus/Rutherford is not a "limited signal" ... and which of Audacy's other FMs do you think is better (and what are the chances of Audacy flipping any of them)?