Morse Code for "9" — Pattern, Mnemonic & Audio
−−−−·
9 = −−−−· (1 dit, 4 dahs)
Mnemonic
NINE-NINE-NINE-dit
Syllable-based memory aid
Timing
3 + 3 + 3 + 3 + 1 units
At 20 WPM: 780ms total
Type
Number
International Morse Code (ITU-R M.1677-1)
Common Words with 9
NINTH9WEEK99900MHZ90PERCENT
Abbreviated Numeral (Cut Number)
−−−−·
Full (5 elements)
→
−−−−
Cut = O (or −−−−·)
Cut number: O (−−−−) — four dashes. The full form is −−−−· (five elements); the cut form drops the final dot. O and 0 (T) are different cut numbers.
In Amateur Radio
88 means "love and kisses" in amateur radio tradition. 9 appears in 9-digit MMSI numbers and the 90m band. Cut number: O (−−−−).
In Aviation
Appears in 9-digit ICAO aircraft addresses, 9-character SELCAL codes, and FL900 (theoretical maximum altitude).
In Maritime
Beaufort scale 9 = severe gale. 9-digit MMSI numbers identify every vessel with a radio. The first 3 digits indicate the country.