Why 8 is interesting
Eight's morse — three dashes followed by two dots — mirrors the shape of 2 (two dots, three dashes) exactly. In numerology, 8 is associated with infinity; its morse also has a recursive quality.
Cultural and numerical context
Eight is three dashes, two dots. The digit in the infinity symbol's morse pattern.
The ham radio cut-number alias
At fast contest speeds, operators abbreviate digit 8 with the letter D. The morse for D is shorter than the morse for 8, saving fractions of a second per character. Over a 24-hour contest with thousands of exchanges, that adds up to meaningful speed gains.
All ten digits at a glance
See the full numbers explainer for why every digit is five elements, or the alphabet for letter codes.
Frequently asked questions
What is the number 8 in morse code?
The digit 8 in international morse code is "---.." — a five-element pattern like every other digit.
Why is every morse digit five elements long?
Digits in morse have a uniform length to make them easier to recognize by ear at high speed. Letters vary in length by English frequency, but digits appear in any context so they get a consistent five-pulse shape.
What's the cut-number alias for 8?
At high contest speeds, operators abbreviate 8 with the letter D, which is shorter in morse. This is called cut-number shorthand and is context-specific to fast CW operation.