What is the International Code signal for...

Question 1 of 2707066636eec28f7522a1c51c58c

What is the International Code signal for calling an unknown station using flashing light?

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Question 1 of 27070

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What is the International Code signal for calling an unknown station using flashing light?

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🔍 Key Concepts

• International Code of Signals (INTERCO) for visual signaling • Purpose of a general call to all stations versus calling a specific known station • Difference between letter groups that are plain language abbreviations and those that are special signal groups

💭 Think About

• Ask yourself: if you do NOT know the name or identity of the other station, what kind of general call would make sense to attract any station’s attention? • Look at the choices: which of these looks like a traditional, widely used radio/light call that means “calling any station who can hear/see me”? • Consider whether the International Code of Signals usually uses obvious English abbreviations like "UNK" or "STA" for such an important, standardized call

✅ Before You Answer

• Verify which option is recognized in the International Code of Signals as the group used to call all or unknown stations by flashing light or radiotelegraphy • Check that the correct group is not just an English shorthand like "UNK" (unknown) or "STA" (station), but a standardized signal group • Confirm that the same group is also known from radio-telegraph / general call procedures, not just from plain English abbreviations