Learn Alphabet 4
# Morse Code for "4" — Pattern, Mnemonic & Audio 4 ····− Listen to 4 4 = ····− (4 dits, 1 dah)
### Mnemonic i-di-ot-ic-FOUR Syllable-based memory aid ### Koch Lesson Lesson 33 When this character is introduced ### Timing 1 + 1 + 1 + 1 + 3 units At 20 WPM: 420ms total ### Type Number International Morse Code (ITU-R M.1677-1) 3 View all characters 5
### Common Words with 4 F O U R T H 4 C O U R S E 4 0 W P M 4 0 0 H Z 4 S E R V I C E
### Abbreviated Numeral (Cut Number) ····− Full (5 elements) → ···· Cut = H (or ····−)
Cut number: H (····) — four dots, same as the letter H. This is the most natural cut number since the abbreviated form is already a common letter. In Amateur Radio
Appears in 40m band (7 MHz), 4-element Yagi antennas, and the 4-letter ICAO airport codes (KJFK, EGLL). Cut number: H (····). In Aviation
4-letter ICAO codes identify every airport worldwide: KJFK (New York JFK), EGLL (London Heathrow), OMDB (Dubai). Pilots use these in flight plans. In Maritime
Appears in MMSI numbers (9-digit Maritime Mobile Service Identity), latitude/longitude coordinates, and vessel tonnage figures. ### Practice Strings Containing 4 44 74 84 94 104 400 404 414 444 474
### Learn More Koch Method Trainer Translate with 4 Your name in Morse Amateur Radio CW

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Canonical: https://morsely.org/learn/character/4