Talking about programs and permissions, I secretly wonder how many radio stations I have.
Under the single call sign "kdx" I will ultimately be sending on 3 - AM, 1 - FM and 1 - shortwave transmitter, while also sending on three stream servers.
The AMs include a carrier current and a radiant antenna, and the streams are 2 - MP3 at high bit-rate and medium bit-rate, and an HE-AAC v2 stream.
At this time the same programming is simulcast on all of them.
Why does it matter?
It matters because program producers have given permission to air on "KDX," which might sound to them like a single station. Lately I have gone to a few producers and explained that I have radio transmitters and stream servers, and they have expressed no concern about the distinctions.
Theoretically I could divide my signals and send different programming on the various channels, which would be even closer to being "multiple" stations.
As an example there's WBCQ, The Planet, with four shortwave frequencies, sometimes all carrying the same thing and at other times separate programming.
Other stations I have are utility stations that are used for STL relay, editing channel, and such internal purposes, and those do have other call letters.
There's also KHZ AM, the "Indoor Antenna Experimental Station," KEGO-FM the station for relaying vinyl records to another room for digitizing, and plans for a rash of AM stations on 5-adjacent frequencies in the X-band.
All part of Worldround Radio from a disclosed location in North America.
One group of many.