Discrete, Composite, and the FCC

[Lazy J]

I have an old discrete set of Marti 10s that I want to replace with a new composite set of STLs. However, my STL license states 949.875 and 950.125 as my frequencies. So if my new composite STL is centered on 950, then I'm well within my allotted space, but it will not be accurate with my license. Will the FCC care? What do I need to submit to get this updated? Is a frequency study required to get this changed?

[BroadcastDoc]

The FCC will care, and you'll need to file a new application with the FCC. While you probably won't need to get a study done, you'll want to check with a frequency coordinator in your area - you'll likely need to send notices to any co-channel users within a certain area.

[boiseengineer]

A local station has gotten away with running that way for 10 to 15 years! A composite dead center of the split mono pair.
Plus, the transmitt location and path he's using isn't coordinated or on the license he has.
That's about to come to an end. Another STL that is licensed for that same frequency is making a big deal of it, finally.