G – Repeat back of information received instead of receipt method.SOS means 'Save Our Souls' or 'Save Our Ship' It is the international distress signal. Messages exchanged between two or more stations intended for a silent clandestine station. Akin to ROGER in radiotelephone procedures. Normally broadcast type traffic such as weather messages Methods for transmitting military message via CW: (note mnemonics FRIG).į Do not answer. TO (dah da_da_dah) Action addressee (military) SK (or VA) (didi_di_da_di_dah)* End, nothing follows, I am closing down. K – (da_di_dah) Go ahead - akin to OVER in radiotelephone procedures. INFO – (di_dit da_dit didi_da_dit da_da_dah) Information Addressee (military) INT – (didi_da_di_dah)* Interrogatory – asks a question, such as INT QSA (military)

IMI – (didi_da_da_di_dit)* Repeat, also I am repeating G – (da_da_dit) Repeat back (Compare R for message received) Two I’s sent without normal spacing and used in heading of military messages.ĭE – (da_di_dit dit This is or identifies who is sending (Ex: AJM DE AJT K).į – (didi_da_dit) Foxtrot message – do not answer (military)įM – (didi_da_dit da_dah) Message originator (military) Used in text of military messages (compare separator sign) Two per message used to separate the message text from the heading and the message ending. (military)īT – (da_didi_di_dah)* Long break. SOS is an international distress signal (or general call sign), not a prosign.Ī prosign consists of one or more letters some multiple letters (marked with *) are sent as one character here are a few:ĪR – (di_da_di_da_dit)* End of transmission, no answer expected or requiredĪS – (di_da_didi_dit)* Wait (may be followed with a number)ī – (da_didi_dit) More to follow - I have additional message traffic.

The use of the under_score to separate sound elements also enhances student learning by better recognition of the character or letter and the replication of that sound. Therefore, the correct sounding of SOS is didi_di_da_da_da_didi_dit (the under_score indicates the character or letter is sent as one). The letter S is properly sounded didi_dit, while dit dit dit is the letter “E” three times over. The correct answer is one.Ī dit sound indicates the ending of a character or letter and nothing follows the dit for that character.

Some references say that the answer is six, which is incorrect. How many dits are there in the international distress signal SOS?

What does sos mean