What Is the SK Prosign in Morse Code?
SK (also written VA) is the prosign for end of contact / end of work. The letters S and K are sent run-together as one 6-signal symbol.
When you search for “sk prosign in morse code”, “morse code for sk prosign”, or “SK in morse code”, the answer is the same ITU-standard pattern: ...-.-. Other common names for this prosign include VA, end of contact, end of work, silent key.
When to Use the SK Prosign
Sent at the conclusion of an entire QSO, after final pleasantries, to formally close the conversation. It also has a memorial meaning — “Silent Key” — used when a fellow operator passes away.
Practice: What Is the Morse Code for the SK Prosign?
Select the correct Morse code for the sk prosign (SK):
How to Tap the SK Prosign in Morse Code
To transmit the sk prosign (...-.-), use this sequence:
ITU Timing Rules
- Dot (·) = 1 unit
- Dash (−) = 3 units (3× longer)
- Signal gap = 1 unit
- Letter gap = 3 units
- Word gap = 7 units
Timing Reference Table
| Speed | Dot | Dash | Letter gap | Word gap |
|---|---|---|---|---|
| 5 wpm | 240ms | 720ms | 720ms | 1680ms |
| 10 wpm | 120ms | 360ms | 360ms | 840ms |
| 17 wpm (this page) | 70ms | 210ms | 210ms | 490ms |
| 20 wpm | 60ms | 180ms | 180ms | 420ms |
How to Remember the SK Prosign in Morse Code
“Signing Off” — three quick dots (S) flowing into a long-short-long (K). A clean, decisive farewell tap.
Frequently Asked Questions — SK Prosign in Morse Code
The sk prosign (SK) in Morse code is ...-.- (4 dots, 2 dashes). It’s the standard ITU code used worldwide.
The Morse code for the sk prosign is ...-.-. Tap the sequence as: dot, dot, dot, dash, dot, dash, with a one-unit gap between each signal.
To send the sk prosign: short tap, then short tap, then short tap, then long press, then short tap, then long press. Keep one unit of silence between each signal and three units between this character and the next.
The sk prosign uses 6 signals total: 4 dots and 2 dashes.
Sent at the conclusion of an entire QSO, after final pleasantries, to formally close the conversation. It also has a memorial meaning — “Silent Key” — used when a fellow operator passes away.
Yes — ...-.- is defined by the ITU (International Telecommunication Union) Recommendation M.1677 and is used worldwide for the sk prosign.
Related Morse Code Prosigns
Other prosigns commonly used alongside the sk prosign: