Signalling & Communication
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TermDefinition
- Flag / Pennant, Signals & Communication Code Flag Alpha (A)

The International Maritime Signal Flag Alpha.
Meaning
I have a diver down; keep well clear at slow speed.
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If appended with a Numeral... - Flag Semaphore, Signals & Communication Letter A (Flag Semaphore)

This shape represents the Letter A (Flag Semaphore) and the Number 1 (Flag Semaphore).
The presumed signals are letters. The signaller...
More Details - Morse Code, Signals & Communication Letter A (Morse Code)
International Morse Code sequence representing the letter A.
- Phonetic Alphabet, Signals & Communication Alpha
Pronounced: AL-far
Letter "A" in the phonetic alphabet system.
- General Nautical Terminology, Signals & Communication Ampitude Modulation (AM)
A method of transmitting information by varying the strength (amplitude) of a carrier wave in proportion to the signal being sent.
Amplitude...
More Details - Flag Semaphore Attention (Flag Semaphore)

This shape is used to gain the receiver's attention and is used at the beginning of a transmission. The message recipient responds with the...
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