Actually, it is sent sequentially as a single nine-digit signal, then repeated. Graphically this looks like ...---... ...---... ...---... and so on. Incid

Actually, it is sent sequentially as a single nine-digit signal, then repeated. Graphically this looks like ...---... ...---... ...---... and so on. Incidentally, graphical representations of Morse code are weak tea. It has to be heard to be understood.