Morse and CW

cw morse
Morse code is a way to encode text through the generation of a carrier wave (CW). It is used to communicate over long distances or with low power (QRP).
The code is composed of 5 elements:

  1. short mark, dot or 'dit' (·) — one unit long
  2. longer mark, dash or 'dah' (–) — three units long
  3. intra-character gap (between the dots and dashes within a character) — one unit long
  4. short gap (between letters) — three units long
  5. medium gap (between words) — seven units long

Character

Code

Character

Code

Character

Code

Character

Code

Character

Code

Character

Code

A

· —

J

· — — —

S

· · ·

1

· — — — —

.

· — · — · —

:

— — — · · ·

B

— · · ·

K

— · —

T

2

· · — — —

,

— — · · — —

;

— · — · — ·

C

— · — ·

L

· — · ·

U

· · —

3

· · · — —

?

· · — — · ·

=

— · · · —

D

— · ·

M

— —

V

· · · —

4

· · · · —

''

· — — — — ·

+

· — · — ·

E

·

N

— ·

W

· — —

5

· · · · ·

!

— · — · — —

-

— · · · · —

F

· · — ·

O

— — —

X

— · · —

6

— · · · ·

/

— · · — ·

_

· · — — · —

G

— — ·

P

· — — ·

Y

— · — —

7

— — · · ·

(

— · — — ·

"

· — · · — ·

H

· · · ·

Q

— — · —

Z

— — · ·

8

— — — · ·

)

— · — — · —

$

· · · — · · —

I

· ·

R

· — ·

0

— — — — —

9

— — — — ·

&

· — · · ·

@

· — — · — ·




CW ABBREVIATIONS
These abbreviations are commonly used in CW transmissions to shorten transmission times. Not all CW operators use all of them - most will use very few. As a general rule most operators do not abbreviate unnecessarily, especially when communication with an operator that they do not know or whose experience is unknown. In contest conditions, abbreviations are common as operators try to gain as many contacts as possible over the competition period.

AbbreviationMeaningAbbreviationMeaning
AA All After OB Old Boy
AB All Before OC Old Chap
ABT About OM Old Man
ADEE Addressee OP Operator
ADR Address OPR Operator
AGN Again OT Old Timer
AM Amplitude Modulation PBL Preamble
ANT Antenna PKG Package
BCI Broadcast Interference PSE Please
BCL Broadcast listener PT Point
BCNU Be seeing you PWR Power
BK Break in PX Press
BN Between, Been R Received, Are
BT Separation RC Ragchew
BTR Better RCD Received
Bug Semi automatic key RCVR Receiver
C Yes, Correct REF Refer to
CFM Confirm, I confirm RFI Radio Frequency Interference
CK Check RIG Station Equipment
CKT Circuit RPT Repeat, Report
CL Closing Station, Call RTTY Radioteletype
CLBK Callbook RST Readability Strength Tone
CLD Called RX Receive, receiver
CLG Calling SASE Self addressed stamped envelope
CNT Cant SED Said
CONDX Conditions SEZ Says
CQ Calling any station SGD Signed
CU See you SIG Signature, Signal
CUL See you later SINE Personal initials or nickname
CUM Come SKED Schedule
CW Continuous Wave SRI Sorry
DA day SS Sweepstakes
DE From, From this SSB Single Sideband
DIFF Difference STN Station
DLD & DLVD Delivered SUM Some
DN Down SVC Service
DR Delivered T Zero
DX Distance TFC Traffic
EL Element TMW Tomorrow
ES And TKS & TNX Thanks
FB Fine business TR & TX Transmit
FER For T/R Transmit/Receive
FM Frequency Modulation, From TRIX Tricks
GA Go ahead, Good afternoon TT That
GB Goodbye, God Bless TTS That is
GD Good TU Thank you
GE Good Evening TVI Television interference
GESS Guess TX Transmitter, Transmit
GG Going TXT text
GM Good Morning U You
GN Good Night UR You're Your
GND Ground URS Yours
GUD Good VFB Very Fine Business
GV Give VFO Variable Frequency Oscillator
HH Error sending VY Very
HI HI Laughter W Watts
HR Hear WA Word After
HV Have WD Word
HW How, Copy? WDS Words
IMI Repeat, say again WKD Worked
LNG long WKG Working
LTR Later WPM Words per minute
LVG Leaving WRD Word
MA & MILLS Milliamperes WX Weather
MSG Message TXVR Transceiver
N No, Nine XMTR Transmitter
NCS Net Control Station XTL Crystal
ND Nothing Doing XYL, YF Wife
NM No More YL Young Lady
NR Number YR Year
NW Now , Resume transmission 73 Best Regards

Source: http://www.amateur-radio-wiki.net/index.php?title=Codes_and_Alphabets

 

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