Especialidades JA/Comunicaciones/Código semáforo
El sistema de semáforo de bandera más nuevo utiliza dos postes cortos con banderas cuadradas, que un abanderado sostiene en diferentes posiciones para señalar letras del alfabeto y números. El abanderado sostiene un palo en cada mano y extiende cada brazo en una de las ocho direcciones posibles. Excepto en la posición de descanso, las banderas no pueden superponerse. Las banderas se colorean de manera diferente en función de si las señales se envían por mar o por tierra. En el mar, las banderas son de color rojo y amarillo. Mientras están en tierra, son rojos y blancos.
Alfabeto
Una de las formas más sencillas de aprender el alfabeto semáforo es dividirlo en cuatro secciones (o "vueltas", en el entendido de que recuerdan las vueltas de las manecillas del reloj). A continuación, el alfabeto semáforo se presenta tal como lo ve el sujeto que recibe el mensaje, diferenciando cada "vuelta":
 Posición de descanso |
 Inician o finalizan números |
 Error |
 Cancelar |
Primera vuelta
 A / 1 |
 B / 2 |
File:Semaphore Charlie.svg C / 3 / Recibido/Correcto |
File:Semaphore Delta.svg D / 4 |
File:Semaphore Echo.svg E / 5 |
 F / 6 |
File:Semaphore Golf.svg G / 7 |
Segunda vuelta
| 80px H / 8 |
80px I / 9 |
80px J / Inician o finalizan letras |
80px K / Cero |
80px L |
80px M |
80px N |
Tercera vuelta
| 80px O |
80px P |
80px Q |
80px R |
80px S |
80px T |
80px U |
Cuarta vuelta
| 80px V |
80px W |
80px X |
80px Y |
80px Z |
Tips
When you are first learning semaphores, a good Bible text to practice with is Philippians 4:8, as it repeats the phrase "whatever is" six times. Since it is so repetitive, You should be able to quickly signal the "whatever is" portion to get your speed up. This verse contains all the letters of the alphabet except j, q, and z which can be learned afterwards.
Finally, brothers, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable—if anything is excellent or praiseworthy—think about such things.
Graphically
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File:Semaphore India.svgI | File:Semaphore November.svgN | A |
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File:Semaphore Tango.svgT | File:Semaphore Hotel.svgH | File:Semaphore Echo.svgE | R
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File:Semaphore Tango.svgT | File:Semaphore Echo.svgE |  V
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File:Semaphore Uniform.svgU | File:Semaphore Echo.svgE |
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File:Semaphore Hotel.svgH | A |
File:Semaphore Tango.svgT | File:Semaphore Echo.svgE | V
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File:Semaphore Hotel.svgH | A |
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File:Semaphore Hotel.svgH | A |
File:Semaphore Tango.svgT | File:Semaphore Echo.svgE | V
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File:Semaphore Uniform.svgU | R
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File:Semaphore Hotel.svgH | A |
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File:Semaphore Echo.svgE | L
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File:Semaphore Hotel.svgH | A |
File:Semaphore Tango.svgT | File:Semaphore Echo.svgE | V
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File:Semaphore India.svgI | R
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File:Semaphore Bravo.svgB | L
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More Tips
Learn some landmark letters first and commit them to memory. Groups of related letters are a good choice. For example, these three make straight lines:
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These four are made by holding the flags 90° to one another, but all are at 45° to the signaler:
| File:Semaphore Uniform.svgU | File:Semaphore November.svgN | File:Semaphore India.svgI |  X
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These four are made by holding the flags 45° apart:
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File:Semaphore Hotel.svgH | O
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File:Semaphore Tango.svgT |
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Most of these are fairly common letters (except for X), so knowing them will allow you to spell the better part of most words. Add an A and an S to the mix:
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S
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and you can spell a quick sentence:
| File:Semaphore Uniform.svgU | File:Semaphore November.svgN | File:Semaphore India.svgI | X
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File:Semaphore India.svgI | S
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Rest
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File:Semaphore Hotel.svgH | O
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File:Semaphore Tango.svgT | R
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