WCKY on 1530 kHz made it through to Pinelands at 0500 UTC on the 15th July 1974 via the Siera valve receiver and 20 metre longwire antenna.
I was fortunate to receive WCKY's QSL card on the 28th October 1974 from Chief Engineer Adrian Lentz (a duration of 102 days after posting my reception report).
WCKY went from a three-tower to a four-tower array in the late 1970s. The station modified the array in order to throw more power towards the north and east.
It is interesting to note that the previous pattern favored skywave coverage to the south which probably contributed to the fairly regular trans Atlantic reception in Pinelands during the middle 1970's.
Google Earth Image showing the WCKY Cincinnati transmitter towers at 39° 03' 55" N, 84° 36' 27" W. The single large tower is used for a non-directional pattern during the daytime and all four towers are used for the directional pattern at night.