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CW Abbreviations & Punctuation
by John Shannon, K3WWP

(From his web site here)

There are many many abbreviations used for words on CW, ranging from commonly used abbreviations like B4 for Before or TU for Thank You to very obscure abbreviations known only to the one using them. Thus such a list must be a very subjective list. More formal are the abbreviations, or code groups used for punctuation. The following are what I believe to be the most common and easiest to understand abbreviations. After that is a table of CW punctuation.

Abbrev.WordAbbrev.Word
ABTAboutOBOld boy
ADRAddressOMOld man
AGNAgainOPOperator
ANTAntennaOTOld timer; old top
B4BeforePSEPlease
CYesPWRPower
CFMConfirmRIGStation equipment
CULSee you laterRPTRepeat; report
ESAndRX; RCVRReceiver
FBFine businessSEDSaid
GAGo aheadSEZSays
GAGood afternoonSIGSignal
GBGood byeSKEDSchedule
GBGod blessSRISorry
GEGood eveningTMWTomorrow
GGGoingTNXThanks
GMGood morningTTThat
GNGood nightTUThank you
GNDGroundTVITelevision interference
GUDGoodTXTransmitter
HILaughterUR; URSYour; Yours
HIHighVYVery
HRHere; hearWKD; WKGWorked; working
HVHaveWLWill
HWHow; how copyWUDWould
LIDA poor operatorWXWeather
MSGMessageXMTRTransmitter
NNoYF; XYLWife
NILNothingYLYoung lady
NRNumber73Best regards
NWNow88Love and kisses


SymbolCode groupName
".-..-.Quotation mark
$...-..-Dollar sign
'.----.Apostrophe
(-.--.Open parenthesis (1)
)-.--.-Close parenthesis
[-.--.Open square bracket (1)
]-.--.-Close square bracket
+.-.-.Plus sign (2)
,--..--Comma
--....-Hyphen or single dash
..-.-.-Period
/-..-.Slant
:---...Colon
;-.-.-.Semicolon (3)
=-...-Equal sign or double dash (4)
?..--..Question mark
@.--.-.At symbol (5)
_..--.-Underline
.-.-..Paragraph
!---.Exclamation point (6)
Notes:

(1) - The close parenthesis code group is often used for both open and close parentheses and square brackets.
(2) - You'll recognize this to be the same as AR - the end of transmission procedure signal.
(3) - This is also listed in some sources as -.-.- but I believe -.-.-. is official.
(4) - The same as BT - the break in text procedure signal.
(5) - Most punctuation code groups date from the early days of CW, but this is a new one designed to be used for the @ symbol in email addresses.
(6) - Commonly used, but not official in the Continental Morse code. It's taken from the official American Morse code group.