Question
When are you required to transmit your assigned call sign?
Answer Options
- A) At the beginning of each contact, and every 10 minutes thereafter
- B) At least once during each transmission
- C) At least every 15 minutes during and at the end of a communication
- D) At least every 10 minutes during and at the end of a communication
Correct Answer: D
Explanation
This is a key regulatory rule for all amateur operation and applies to all modes (voice, CW, digital). You must identify your station using your official call sign at least every 10 minutes during a communication and at the end of that communication.
It is good operating practice to identify at the beginning of a contact, but only the 10-minute interval and final identification are legally required by the FCC rules.
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