Indeed it was Consol. Bushmills ( 266kHz) was one of five such stations in Western Europe. The others were:
Stavanger ( Norway) 319kHz
Quimper ( France) 257 kHz ( c/s FRQ)
Lugo ( Spain) 285kHz ( c/s LG)
Seville ( Spain)315kHz (c/s SL)
Each ground station consisted of a transmitter and three aerials in a straight line. Using this aid to navigation required nothing more than a suitable receiver and a set either of special charts or tables. CAP 59 was the UK handbook which included the tables and it stated that ( with various caveats) ranges by day over the sea were around 1000 nm and by night 1200 nm.However using it was a slow process - you could not take simultaneous fixes and each plot required about two minutes of concentrated effort. It couldn't be used as a homing aid: what it did give was a position line.It was much beloved of the Nav General Examiners in the early 70's!
Last edited by Soddit; 10th November 2002 at 07:29.