The commercial station ran from 1988 up until its last broadcast in 2002
from its transmission site at Clarkstown, County Meath, Ireland.

Broadcasts from the station could be heard as far away as Finland, Ibiza 
and even Moscow.
At the peak of its popularity in 1993, the station had six million 
listeners.
The longwave frequency meant it was picked up by a lot of drivers in 
older cars without FM - but it quickly gained a reputation for playing 
the same records a lot. Extreme's More Than Words and anything by Mike 
and Mechanics were particular favourites.
https://www.manchestereveningnews.co.uk/news/nostalgia/remember-atlantic-252-story-station-22784995
(via Mike terry via WOR io group)