Well, I've been away from ham radio for 30 years...man, have some things changed.
The first thing I did, was go out and have 500 QSL cards printed....what a shock!... Even the pony express doesn't come around any more!
I've also noticed that there are "marker signals" that delineate various boundaries of the bands.
Who broadcasts those markers?
Please have mercy and don't laugh at me too much...it does say "There No Stupid Questions". I may be stretching that statement.