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Volumes

1. Vol 1 The Code, Timing & Abbreviations — Vol 1: Dits, Dahs, and the Clock Morse isn't dots and dashes — it's dots and dashes and silence, all measured in one unit of time. Get the clock right and the code is legible; get it wrong and it's mush. Here is the timing, exactly.
2. Vol 2 The Code, Timing & Abbreviations — Vol 2: The Alphabet, the Tree, and the Shorthand The characters themselves, a way to decode them by branching, and the dense shorthand — prosigns, Q-codes, and abbreviations — that lets two operators hold a whole conversation in a fraction of the letters.