Answer: morsecode

AnswerCrossword Clue
MORSECODE

Dots and dashes

MORSECODE

1830s communication innovation

MORSECODE

Ham language

MORSECODE
System with dots and dashes
MORSECODE
It's all dots and dashes
MORSECODETelegraph operator's alphabet
MORSECODETelegraph basis
MORSECODEAlfred Vail invention
MORSECODEIt's made up of dots and dashes
MORSECODESignaling system.
MORSECODESystem of communication.
MORSECODEPart of Boy Scout lore.
MORSECODEDit-dah system
MORSECODETelegraph-signals system
MORSECODECommunication means for emergencies
MORSECODEA ham might use it
MORSECODEWhat a ham may use
MORSECODESomething you might tap in
MORSECODEDots and dashes, collectively
MORSECODECommunication type
MORSECODERobert's rules?
MORSECODEWhere S is ...