Signals and codes
Two sheets about one problem: getting a letter across when the channel is bad. Morse solves it with time — dots and dashes, with the commonest letters given the shortest patterns, which is why E is a single dot and Q is four symbols long. The phonetic alphabet solves it with whole words, so that B and D cannot be confused on a line that drops half of what you say.
The phonetic sheet is the ICAO standard, the one aviation and marine radio actually use, and it keeps the official spellings. Alfa and Juliett are misspelled deliberately: ph and a silent final t are not safe assumptions when the other end of the radio speaks another language.
They suit a study, a workshop, or anywhere a radio lives — and they earn themselves back the first time someone has to spell a surname over the phone.
CROCHET SYMBOLS
the standard chart symbols, abbreviations and US/UK name differences — per the Craft Yarn Council standards
MORSE CODE
26 letters and 10 digits · dot, dash
PHONETIC ALPHABET
the ICAO standard · for radio and telephone
FLAG SEMAPHORE
two flags, eight positions 45 degrees apart — all 26 letters; after the numerals sign A–I read as 1–9 and K as 0
MARITIME SIGNAL FLAGS
the twenty-six alphabet flags of the International Code of Signals — and what each one means alone
NUMERAL PENNANTS AND SUBSTITUTES
how to fly the same flag twice in one group with only one set aboard