International Code of Signals
The calculator decodes a message in International code of Signals. It also displays code using flag signals and Morse code.
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You may use the following calculator to decode a message, encoded by the International Code of Signals (ICS). ICS is used to transmit signals by use of visual, sound and radio communications. The calculator transforms the message in flag signal sequence and Morse Code. The flags description follows the calculator.
The calculator supports single and two letter signals plus some signals used in US and Russian Navy. It interprets and substitutes the signal parameters if any. As an example, the message of Captain Grant from the famous novel by Jules Verne is used.
International Code of Signals
Flag signaling in ICS
The ICS system uses 26 flags corresponding to the letters of the English alphabet, 10 numerical pennants, 4 substitution pennants and an answering pennant.
 |
A - alpha |  |
B - bravo |  |
C - charlie |  |
D - delta |  |
E - echo |
 |
F - foxtrot |  |
G - golf |  |
H - hotel |  |
I - india |  |
J - juliett |
 |
K - kilo |  |
L - lima |  |
M - mike |  |
N - november |  |
O - oscar |
 |
P - papa |  |
Q - quebek |  |
R - romeo |  |
S - sierra |  |
T - tango |
 |
U - uniform |  |
V - viktor |  |
W - whiskey |  |
X - X-ray |  |
Y - yankee |
 |
Z - zulu |
Numerical pennants
 |
1 - unaone |  |
2 - bissotwo |  |
3 - terrathree |  |
4 - cartefour |  |
5 - pantafive |
|
6 - soxisix |  |
7 - setteseven |  |
8 - octoeight |  |
9 - novenine |  |
0 - nadazero |
Substitute pennants
 |
1st - substitute |  |
2nd substitute |  |
3d substitute | |
4th substitute |
Answering pennant
is used as a finishing flag, an acknowledgement of receipt flag and a decimal point.
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