It could possibly have been KTRH. I remember a map showing a pretty good signal going towards the SW and through the southern part of Baja California. Perhaps that continues well out into the Pacific.I guess I missed this thread when it was first posted.
So I can null KCIK from Kihei on Maui at night pretty much but I've never heard KCBS for some reason.
There is a station in the background that's gotten strong enough a couple of times to hear the words but I know it's not KCBS and I've never heard any ID.
And I have no idea what it could possibly be. It's a talk station.