KYW was moved to Philadelphia from Chicago, probably as a 10 kW-U, ND
station.

1060 in Philadelphia would be mutually exclusive with 1050 in New York
if KYW
didn't protect 1050, thereby establishing a defendable Class A contour
towards
the NE (and 1050) for itself.


This all seems quite strange, so I assume there is a good story to explain
how it all came about? Not knowing the dates when KYW moved to
Philadelphia, or when the "NARBA" was ratified, I assume that the move of
KYW occurred well before the "NARBA"? If this is the case, how did the
KYW pattern come to have such a deep null towards WINS, which wouldn't
have even existed at the time?

For several decades there was a radio station in Quebec City in Canada on
1060. Perhaps KYW had to protect this station before 1050 came on the air in
New York. (This station in Quebec may not be on the air now).