Morse Code Worksheet

MORSE CODE WORKSHEET
Morse Code History:
Morse Code is a type of character encoding that transmits telegraphic information using rhythm. Morse Code uses a standardized sequence of
short and long elements to represent the letters, numerals, punctuation and special characters of a given message. The short and long elements
can be formed by sounds, marks, or pulses, in on off keying and are commonly known as "dots" and "dashes" or "dits" and "dahs". The speed of
Morse Code is measured in words per minute (WPM) or characters per minute, while fixed-length data forms of telecommunication transmission
are usually measured in baud or bps.
Originally created for Samuel F. B. Morse's electric telegraph in the early 1840s, Morse Code was also extensively used for early radio
communication beginning in the 1890s. For the first half of the twentieth century, the majority of high-speed international communication was
conducted in Morse Code, using telegraph lines, undersea cables, and radio
circuits. However, the variable length of the Morse characters made it hard to
adapt to automated circuits, so for most electronic communication it has been
replaced by machine readable formats, such as Baudot code and ASCII.
The most popular current use of Morse Code is by amateur radio operators,
although it is no longer a requirement for amateur licensing in many countries. In
the professional field, pilots and air traffic controllers are usually familiar with
Morse Code and require a basic understanding. Navigational aids in the field of
aviation, such as VORs and NDBs, constantly transmit their identity in Morse Code.
Morse Code is designed to be read by humans without a decoding device, making
it useful for sending automated digital data in voice channels. For emergency
signaling, Morse Code can be sent by way of improvised sources that can be easily
"keyed" on and off, making Morse Code one of the most versatile methods of
telecommunication in existence.
Morse Code Communications and Characters
MORSE CODE ALPHABET
A: • ―
N: ― •
B: ― • • •
O: ― ― ―
C: • ― •
P: • ― ― •
CH: ― ― ― ―
Q: ― ― • ―
D: ― • •
R: • ―
E:
S: • • •
F: • • ― •
T:
G: ― ― •
U: • • ―
H: • • • •
V: • • • ―
I: • •
W: • ― ―
J: • ― ― ―
X: ― • • ―
K: ― • ―
Y: • ― ―
L: • ― • •
Z: ― ― •
M: ― ―
MORSE CODE ALPHABET OPPOSITES
E:
T:
I: • •
M: ― ―
S: • • •
O: ― ―
H: • • • •
CH: ― ― ―
A: • ―
N:
W: • ― ―
D: ― • •
J: • ― ― ―
B: ― • • •
R: • ― •
K: ― • ―
P: • ― ― •
X: ― • • ―
L: • ― • •
Y: ― • ―
F: • • ― •
Q: ― ― • ―
U: • • ―
G: ― ―
V: • • • ―
Z: ― ― • •
C: ― • ― •
NGƯỜI ĐÁNH TIN
CODE
Mời Nhận Bản Tin; (AAAA):
• ― / • ― / • ― / • ―
Truyền Lầm; (HH):
• • • • / • • • •
Hết Bản Tin; (AR):
• ― / • ― •
Cấp Cứu; (SOS):
• • • / ― ― ― / • • •
NGƯỜI NHẬN TIN
CODE
Sẵn Sàng Nhận Tin; (K):
― • ―
Xin Truyền Lại; (IMI):
• ― / • ― / • ― / • ―
Xin Đánh Chậm Lại; (VL):
• • • ― / • ― • •
Xin Chờ Đợi; (AS):
• ― / • • •
Thổi Lại Chữ Trước; (C):
― • ― •
Hiểu Rồi; (R):
• ― •
SENDER
CODE
Attention Prepare to receive; (AAAA):
• ― / • ― / • ― / • ―
Error in message; (HH):
• • • • / • • • •
End of message; (AR):
• ― / • ― •
Emergency: (SOS):
• • • / ― ― ― / • • •
RECEIVER
CODE
Ready to receive; (K):
― • ―
Please transmit again; (IMI):
• • / ― / • •
Please transmit slower; (VL):
• • • ― / • ― • •
Please wait; (AS):
• ― / • • •
Trasmit previous letter; (C):
― • ― •
Understood; (R):
• ― •
Morse Code Numbers
1: • ― ― ― ―
6: ― • • • •
2: • • ― ― ―
7: ― ― • • •
3: • • • ― ―
8: ― ― ― • •
4: • • • • ―
9: ― ― ― ― •
5: • • • • •
0: ― ― ― ― ―
Accent Marks
Letter Accents
Dấu Sác: (S)
Chữ Â: (AA)
Dấu Huyền: (Q)
Chữ Ă: (AW)
Dấu Hỏi: (Z)
Chữ Đ: (DD)
Dấu Ngã: (X)
Chữ Ê: (EE)
Dấu Nặng: (J)
Chữ Ô: (OO)
Chữ Ơ: (OW)
Chữ Ư: (UW)
Chữ ƯƠ: (OUW)
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