Morse Signalling procedures

Morse signalling procedures

There are some rules that should be followed when using morse to comminucate with another vessel, these will be covered as part of yur oral section of the exam.

If you want to communicate with a specific ship however unsure of their call sign then you can send the following to request their call sign:

If you want to send your own call sign to another vessel this should be done by sending the following the followed by your own call sign.

First up you want to be able to get the other vessels attention. this can be done by sending the following:

-.. . DE

.-.- .-.- .-.- AA AA AA

.-.- ... or ...- --.-CS VQ

Communication sequence

There are certain sequences that have to be folowed when using morse to communicate to ensure that all parties have a thorough understanding of what is being communicated.

If the transmitting station wants the receiving station to wait for another signal they should send:

If the receiving vessel does not understand then they should respond with the following instead:

Once the transmitting station has sent their group, the receiving station should send back the following to show they have understood the group:

.- ... AS

-T

--.. .-.. ZL

Communication Sequence

During communications should you make a mistake the following should be sent:

The receiving vessel should then respond with the same to show they have understood that an error has been sent:

. . . . . . . E E E E E E

. . . . . . . E E E E E E

Communication Sequence

The receiving vessel should then respond with the following to show that they have understood:

If a decimal point has to be sent this should be done by sending the following:

On completion of sending the groups the transmitting station should send the following to indicate that is the end of messages:

.-.-.- AAA

.- .-. A R

.-. R

Communication Sequence

There are ways to request repetition of certain groups that have been sent without requestion the full transmission to be sent again

To Request a group be sent all after a certain group the following can be sent:

To repeat groups that have been sent all before a certain group you sould send:

To repeat a groups in between groups that have been sent you can send:

.-..--.- .--...RPT AB

.-..--.- -...-. RPT BN

.-..--.- .-.- RPT AA

Each of these groups should be followed by the groups that you wish to refer to such as sending RPT AB GF