What Is the BK Prosign in Morse Code?
BK is the prosign for break — an informal invitation for the other operator to transmit immediately. The letters B and K are sent run-together as one 7-signal symbol.
When you search for “bk prosign in morse code”, “morse code for bk prosign”, or “BK in morse code”, the answer is the same ITU-standard pattern: -...-.-. Other common names for this prosign include break, invitation to transmit.
When to Use the BK Prosign
Used in casual ragchew QSOs when you want to hand the channel back to the other station without the formal procedure of K (‘over’) following your callsign.
Practice: What Is the Morse Code for the BK Prosign?
Select the correct Morse code for the bk prosign (BK):
How to Tap the BK Prosign in Morse Code
To transmit the bk 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 BK Prosign in Morse Code
“Back to you, Kid” — B (−···) plus K (−·−) joined: long-three-dots, then long-short-long, signaling “your turn now.”
Frequently Asked Questions — BK Prosign in Morse Code
The bk prosign (BK) in Morse code is -...-.- (4 dots, 3 dashes). It’s the standard ITU code used worldwide.
The Morse code for the bk prosign is -...-.-. Tap the sequence as: dash, dot, dot, dot, dash, dot, dash, with a one-unit gap between each signal.
To send the bk prosign: long press, then 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 bk prosign uses 7 signals total: 4 dots and 3 dashes.
Used in casual ragchew QSOs when you want to hand the channel back to the other station without the formal procedure of K (‘over’) following your callsign.
Yes — -...-.- is defined by the ITU (International Telecommunication Union) Recommendation M.1677 and is used worldwide for the bk prosign.
Related Morse Code Prosigns
Other prosigns commonly used alongside the bk prosign: