The Consol system was developed in Germany during WW2 and was known by them as Sonne, and had the distinction of being used by both sides at the same time. There is a story that the Germans were having trouble with their Spanish Sonne transmitter but were unable to get spare parts to it, so the British supplied the Spanish with the items required to get the transmitter operational again, largely for the benefit of Coastal Command.
The Stavanger station, callsign LEC, was the last operational Consol station and went off the air sometime after 1991. The callsign of the Bushmills station was, if my memory is correct, MWN.