Element 1: Basic Radio Law and Operating Practice

effective 6/25/2009

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1-B-11: Urgency and Safety Communications

1-11B1: What is a typical Urgency transmission?

A request for medical assistance that does not rise to the level of a Distress or a critical weather transmission higher than Safety.

A radio Distress transmission affecting the security of humans or property.

Health and welfare traffic which impacts the protection of on-board personnel.

A communications alert that important personal messages must be transmitted.



1-11B2: What is the internationally recognized Urgency signal?

The words “PAN PAN” spoken three times before the Urgency call.

The letters “TTT” transmitted three times by radiotelegraphy.

Three oral repetitions of the word “Safety” sent before the call.

The pronouncement of the word “Mayday.”



1-11B3: What is a Safety transmission?

A communications transmission which indicates that a station is preparing to transmit an important navigation or weather warning.

A radiotelephony warning preceded by the words “PAN PAN.”

Health and welfare traffic concerning the protection of human life.

A voice call proceeded by the words “Safety Alert.”



1-11B4: The Urgency signal concerning the safety of a ship, aircraft or person shall be sent only on the authority of:

Either Master of ship or person responsible for mobile station.

Master of ship.

Person responsible for mobile station.

An FCC-licensed operator.



1-11B5: The Urgency signal has lower priority than:

Distress.

Ship-to-ship routine calls.

Safety.

Security.



1-11B6: What safety signal call word is spoken three times, followed by the station call letters spoken three times, to announce a storm warning, danger to navigation, or special aid to navigation?

SECURITE.

PAN PAN.

MAYDAY.

SAFETY.





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