Guides / Morse Prosigns — AR, SK, BT, KN
Prosigns
Prosigns (procedural signals) are special Morse characters used in traffic handling. They are not sent as separate letters with letter gaps — the elements run as one symbol.
| Prosign | Role |
|---|---|
| AR | End of message |
| SK | End of contact |
| BT | Break / separator |
| KN | Invite a specific station |
Interactive table: prosigns tool. Curriculum lessons after punctuation introduce each prosign as a +1 Koch step.
Video (coming soon)
Owner YouTube embeds will land here. Until then, use the interactive demos and start Lesson 1 free.