Where does “gipsyry” come from?

gipsyry (English) comes from English ry — A test pattern consisting of a repeating character string alternating letters R and Y, used to test five-level teleprinter and radioteletype (RTTY) systems.

Ancestry of “gipsyry”, step by step

gipsyry traces back through two separate lines of ancestry.

via English ry

StepLanguageWordMeaning
1EnglishryA test pattern consisting of a repeating character string alternating letters R and Y, used to test five-level teleprinter and radioteletype (RTTY) systems

via English gipsy

StepLanguageWordMeaning
1EnglishgipsyAlternative spelling of gypsy
Every word from English ry