International Morse code Chart with alphabets

This page mentions international morse code chart along with morse code alphabets.

As we know morse code is one of the widely used means of communication before technology advancement. After the worldwide development in radio frequency communication, morse code has been used across the world. Following table mentions morse code used for characters and numbers required to form message composition.

The telegraph used morse code, whereas radio telegraphy used an international code of dots and dashes. This is digital form of transmitting the information from one end to the other.

morse code telegraph

When the armature is closed for short duration, a dot is produced. When the armature is closed for long duration, a dash is produced. With basic training any human beings can be trained to send and detect/decode the message at high speed using morse codes.

The figure-1 depicts old form of morse code telegraph used. As shown, a key turned the carrier of a transmitter OFF and ON to generate the dots and dashes. These morse codes are detected at the receiver and converted back to letters and numbers to make up the message. This type of morse code based communication is referred as continuous wave(CW).

Morse code alphabets and numbers

This Morse code is basically composed of two elements viz. dots & dashes. The dots have length of one element while dashes have duration of about 3 elements in time. Characters and numbers in morse code are represented by dots(".") & dashes("-").
EXAMPLE: SOS is represented as ". . . - - - . . . " in morse code format.

The following table is a international morse code chart mentioning codes representing alphabets and numbers.

Alphabet or Number Morse code
A .-
B -...
C -.-.
D -..
E .
F ..-.
G --.
H ....
I ..
J .---
K -.-
L .-..
M --
N -.
O ---
P .--.
Q --.-
R .-.
S ...
T -
U ..-
V ...-
W .--
X -..-
Y -.--
Z --..
1 .----
2 ..---
3 ...--
4 ....-
5 .....
6 -....
7 --...
8 ---..
9 ----.
0 -----
' --..---
. .-.-.-

Length of time for morse code elements use in communication:
• Dot takes 1 unit
• Dash takes 3 units
• Pause between letters should be about 3-units of time
• Pause between words should be about 7-units of time

RF and Wireless Terminologies