Theoretically, you can get from Horizon to Horizon, that might be about 75Deg east and 75 degrees west of your location. In reality, the transponders on satellites have specific beams, and if the beams are not directed into your area, you can't receive the satellite.
There are beams on Hispasat at 30 deg W that you can receive in NY, if you don't have any obstacles in the way. You can also perhaps hit 148 W , if there are not obstacles, and if your motor can move that far west ( the motor's own range of motion is another factor, they differ.)
With most motors and with no obstacles in the way, I'd say you can receive from beams directed at you from satellites at 70 degrees east and west of your longitude. If you are at 73W, then 30W is in your range and so is G18 at 129W . The devil is in the details.
