Why 6 is interesting
Six reverses direction — now dashes grow from the left and dots recede. It’s the mirror of 4 (four dots and a dash becomes one dash and four dots). The cut alias B saves four full symbols.
Cultural and numerical context
Six starts the reverse pattern — one dash, four dots. Mirror of 4.
How to remember 6 in morse
“The six-shooter starts with a bang” — one big dash, then four quick dots like the four follow-up rounds. 6 is also the start of the second half of the digit set: from 6 onward, dashes pile up on the left while dots recede on the right. Compared to 4 (four dots then one dash), 6 reverses the mix entirely.
Where you’ll hear 6 in real morse traffic
Six is heard in 60-meter ham band frequencies (a relatively new HF band), in date references (“June” is “06” in the YYYY-MM-DD date format used in contest logs), in time exchanges (06:00 UTC), and in field-day exchange categories (“6A” for 6 transmitters running on emergency power). The cut alias B is recognized but used carefully — B in continuous text is a common letter, so context disambiguates.
NATO & aviation phonetic for 6
“Six” in NATO. Aviation uses the same word but emphasizes the final S sound — confusion with “sex” is rare but reported.
Practice tip for drilling 6
Pair 6 and 4 in drill sessions. They’re mirror images, and confusion between them is the single most common digit-copying error. The fingerprint: 4 starts with a short dot, 6 starts with a long dash. If you train your ear to fixate on the very first element of every digit you hear, the rest sorts itself out.
How long 6 takes to send
A single 3-unit dah, four 1-unit dits, four gaps: 11 units. At a learning pace of 15 WPM (80 ms per unit) the digit takes 880 ms. Its duration twin is 4 — the same total weight arranged in reverse — and together they sit one step above 5 on the digit ladder, the two lightest characters after the all-dit floor.
6 and 4, dash swapped end for end
Reverse -.... and you have 4 (....-). In the digit system’s symmetry, 6 is where the pattern of 1–5 starts over with the ingredients inverted: 6 through 9 repeat the dot-growth of 1 through 4, but with dahs leading instead of trailing. The opening dah is 6’s signature — catch that first long tone and the four dots that follow can blur without costing you the copy.
Cut-number shorthand: B for 6
On paper the cut for 6 is B (-...) — but it saves just 2 of 11 units, an 18% trim that’s the shallowest in the whole cut-number table. Many operators simply send 6 in full: the saving is barely audible, and in mixed text a bare B invites misreading. It’s the cut that exists more in reference charts than on the air.
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 6 in morse code?
The digit 6 in international morse code is "-...." — a five-element pattern like every other digit.
How long does 6 take to send in morse?
6 (-....) is 4 dits and 1 dah, which with inter-element gaps totals 11 timing units — 660 ms at 20 WPM. Digits range from 9 units (5) to 19 units (0).
What's the cut-number alias for 6?
At high contest speeds, operators abbreviate 6 with the letter B, which is shorter in morse. This is called cut-number shorthand and is context-specific to fast CW operation.