1. A unit can be far from .1-.7 seconds. 2. The length of a dot is one unit. High pitch. 3. A dash is 3 units. Lower pitch. 4. The space between parts of the same letter is 1 unit. 5. The space between letters is 3 units. 6. The space between words is 7 units.
https://en.wikipedia.org/wiki/Morse_code for the image @samsquange for the coding
