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Well Carl, more would probably join in but just as I have discovered there is no specific definition for “broadcasting” easily found (if at all) when searching the FCC website.
There is a plethora of information related to broadcasting but no specific definition.
So, how does one decide if we Part 15 and other unlicensed station operators are broadcasting? I suppose your approach based on descriptions found in a dictionary should apply.
Amateur radio stations, generally speaking, are not allowed to “broadcast” where “broadcast” relates to one-way transmissions. There are a few special exceptions the FCC has allowed the Amateur operators such as beacon transmitters. These are one-way transmissions relegated to the “broadcast” of an identifier. These transmissions are usually for test purposes.
So, it would seem the FCC implies that to “broadcast” amounts to a one-way transmission to be received at multiple locations regardless of the content.
Our license free transmissions are one-way, intended to be received at multiple locations so it would seem we are indeed broadcasting.