QTC Message Format

Based on standard practices, a QTC is a structured format used for sending ham radio messages in CW (Morse code). The structure is designed to ensure reliability, accurate word counting, and message integrity without relying on a strict Net Control Station (NCS). Please see the European CW Association QTC Page here

Here is a breakdown of the standard QTC message structure based on established rules:

• Start Indicator: The message begins with the letters KA, transmitted together without a pause.
• Message Number: A sequential number identifying the message (e.g., 77 or 1).
• Priority: Usually R for Routine priority, though P can be used for Priority messages that interrupt routine traffic.
• Station of Origin: The call sign of the sender (e.g., LXØAAA).
• Word Count: The total number of words contained in the message text.
• Location: The town or city where the message was created.
• Time and Date: The creation time (in UTC, optional) and date (e.g., 1155 APR 13 or just OCT 7).
• Separator: The letters BT, transmitted together.
• Addressee: The call sign of the receiving radio station.
• Separator: Another BT.
• Message Content: The clear text of the message, which should not contain abbreviations or Q-codes to protect the integrity of the message. The text is typically formatted and printed at five words per line to make word counting easy.
• Separator: A final BT after the content.
• Signature: The name or identifier of the sender (e.g., ROBERT).
• End Indicator: The letters AR, transmitted together to signal the end of the message.