Here are some examples of signals used on the French network.
Prior to the battle, army and navy used completely different signals.
The system involves using signals and locations which have been agreed in advance.
These use signals transmitted by the appropriate transmitter for the country in which they are to be used.
This network uses digital signals for improved service and reliability.
But eavesdroppers may be able to use honest signals for their own advantage.
Ayla asked, using sounds and signals, words not quite like any the Clan had ever used.
A simple indication of presence is given with the signal used for locating an object or a person.
The manual also contains the musical signals used by Army musicians.
Other researchers have made more progress by using particular signals that are easier to detect and analyze.