For ARQ communications with a Public Correspondence Coast Station, what is the correct sequence to send TELEX communications?

The correct sequence for sending TELEX communications during ARQ (Automatic Repeat reQuest) communications with a Public Correspondence Coast Station involves a methodical approach, ensuring that the operator is ready to send and receive messages effectively.

Starting with the transceiver setup is essential as it ensures that the equipment is prepared and tuned to the correct frequency and mode for communication. Once the equipment is set up, the next step is to wait for answer-backs from the coast station. This step is critical as it confirms that the station is ready to receive your message and that the link has been established successfully.

Following the reception of answer-backs, the sequence includes the GA (Go Ahead) command, which indicates that the operator is ready to send the message. This command is essential in ARQ communications as it signifies that the operator is about to transmit message text. After the GA signal, the operator sends the actual message text.

This process emphasizes the importance of confirming readiness and establishing communication before transmitting information, ensuring successful completion of message delivery. The other sequences either leave out critical steps or incorrectly rearrange the proper order, disrupting the flow necessary for effective communication in a telex system.