there was also a shortlived transmission of sister christian station 'Crossrhythms' on 1593, which as far as I aware was also from this site. Maybe that was from the "4th transmitter"

I thought 1593 came from somewhere else (Dundalk or Drogheda?)but I could be completely wrong. The forth transmitter, if it existed, seemed to much more recent than that.
I wonder if all the gear is still in the site.