Morse Code for "7" — Pattern, Mnemonic & Audio
−−···
7 = −−··· (3 dits, 2 dahs)
Mnemonic
SVEN-SVEN-did-it
Syllable-based memory aid
Timing
3 + 3 + 1 + 1 + 1 units
At 20 WPM: 540ms total
Type
Number
International Morse Code (ITU-R M.1677-1)
Common Words with 7
SEVENTH7UNIT73750HZ7030KHZ
Abbreviated Numeral (Cut Number)
−−···
Full (5 elements)
→
−−··
Cut = Z (or −−···)
Cut number: Z (−−··) — two dashes, two dots. The "73" exchange is so common that operators sometimes send it as "7Z" or just "73" without abbreviation.
In Amateur Radio
73 is the most famous number in amateur radio — it means "best regards." Sent at the end of every QSO. Cut number: Z (−−··).
In Aviation
Squawk 7700 is the emergency transponder code. Squawk 7600 = radio failure. Squawk 7500 = hijacking. These three codes are universal.
In Maritime
Beaufort scale 7 = near gale. 7 nautical miles per hour = 7 knots. The 7-unit inter-word gap is the longest standard Morse pause.