A – alfa (AL-fa) N – november (no-VEM-ber)
B – bravo (BRAH-voh) O – oscar (OSS-cah)
C – charlie (CHAR-lee) P – papa (PAH-PAH)
D – delta (DELL-tah) Q – quebec (kay-BECK)
E – echo (ECK-oh) R – romeo (ROW-me-oh)
F – foxtrot (FOKS-trot) S – sierra (SEE-air-rah)
G – golf (GOLF) T – tango (TANG-go)
H – hotel (HOH-tell) U – uniform (YOU-ni-form)
I – india (IN-dee-ah) V – victor (VIK-tor)
J – juliet (JU-lee-ett) W – whiskey (WISS-key)
K – kilo (KEY-loh) X – x-ray (ECKS-ray)
L – lima (LEE-mah) Y – yankee (YANG-key)
M – mike (MIKE) Z – zulu (ZOO-loo)


Numbers are somewhat easier to understand. Most can be made clearer by simply “over-enunciating” them as shown below.

One: “Wun”
Two: “TOOO”
Three: “THUH-ree”
Four: “FOH-wer”
Five: “FY-ive”
Six: “Sicks”
Seven: “SEV-vin”
Eight: “Ate”
Nine: “NINE-er
Zero: “ZEE-row”


Numbers are always pronounced individually. The number “60” is spoken as “six zero,” not “sixty.” The number “509” is spoken as “five zero nine,” and not as “five hundred nine” or “five oh nine.”


Pro-words, called “pro-signs” when sent in Morse Code, are procedural terms with specific meanings. They are used to save time and ensure that everyone understands precisely what is being said. Some pro-words are used in general communication, others while sending and receiving formal messages. We will discuss the general words here, and cover the formal message pro-words in a later unit.

Voice Morse Code* Meaning and function
Clear SK End of contact. In CW, SK is sent before final identification
Over AR Used to let a specific station know to respond
Go ahead K Used to indicate that any station may respond
Out CL Leaving the air, will not be listening
Stand by AS A temporary interruption of the contact
Roger R Indicates that a transmission has been received correctly and in full

* Two letters are sent as one character                                                    Source: ARES ® Field


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