RY
RY (noun) means a repeating test string of alternating R and Y characters, historically used to check that teleprinter and radioteletype equipment was working correctly. Example: “Technicians would transmit a long RY string to make sure the teleprinter was in sync.”
How to use RY
Learner’s notesIn plain EnglishA technical test signal, not a normal word — mainly of interest to people who work with old telecommunications equipment.
Fill the gap
Can you complete this real example?
Technicians would transmit a long _____ string to make sure the teleprinter was in sync.