Communication and signalling codes, signs and symbols

Wikipedia has a nice collection of common signals and messages.

Like:

• codes for the blinds

• diving signals

• phonetic alphabet
• morse code

example of A “· —” (midi)

• musical notes
• hazard symbols
• phonetic alphabet

A Alfa
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 Quebec
R Romeo
S Sierra
T Tango
U Uniform
V Victor
W Whiskey
X X-ray
Y Yankee
Z Zulu

• voice procedure

Affirm — Yes
Negative — No
Reading you Five / Loud and clear — I understand what you say 5×5.
Over — I have finished talking and I am listening for your reply. Short for “Over to you.”
Out — I have finished talking to you and do not expect a reply.
Roger — I understand what you just said.
Copy — I heard what you just said.
Wilco — Will comply (after receiving new directions).

• And many others…