International Telegraph Alphabet no. 1

 
Normal Inverted
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
P
D
V
O
L
H
Z
CR
Q
C
T
U
K
J
LF
A
N
F
W
I
M
G
X
E
R
B
S
Y
Error
Spc
Spc
Blank
%
0
'
5
=
+
:
CR
/
9
 
4
(
6
LF
1
 
 
?
 
)
7
,
2
-
8
.
3
Error
Spc
Spc
Blank
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
Blank
Spc
Spc
Error
Y
S
B
R
E
X
G
M
I
W
F
N
A
LF
J
K
U
T
C
Q
CR
Z
H
L
O
V
D
P
Blank
Spc
Spc
Error
3
.
8
-
2
,
7
)
 
?
 
 
1
LF
6
(
4
 
9
/
CR
:
+
=
5
'
0
%
The characters of this alphabet are composed of five information carrying units of equal time frame.
These five elements provide 25 = 32 combinations. Using the two special shift symbols (LTRS and FIGS) transcribing of 58 different characters is possible.
However, for international communication the CCITT prefers the use of the ITA-2 (Internation Telegraph Alphabet no. 2).