Ron,
JFK1 is locked on 128.675 right now.
Thanks for that. During that time 128.675 was simulcasting with 133.500 and 125.925
However I pulled up some more ZNY-JOBOC archive from yesterday and starting at 2120Z they did split off 128.675 into a separate sector. It was used in the corridor working NYC area arrivals/departures from what sounded like FL240 to up to FL300. With 133.500 (combined with 125.925) working FL310 and above.
First time I've heard that, will keep an eye on it. Any chance you could take 128.675 off your #1 radio and put it on the #3 so it's with 133.500 ? Would make it easier to cross-check, and you would hear the controller in that area when they are combined.
JS