Remember to fill in the North point on your sketch, as it is useless without it. Leave a margin of about an inch all round your sketch and state the scale that you have made your sketch, _e. g._, two inches to the mile.

[Ill.u.s.tration: CONVENTIONAL SIGNS ETC]

SIGNALLING

CONTINENTAL

Used on Submarine Cables, Wireless and in Foreign Countries

A .- B -...

C -.-.

D -..

E .

F ..-.

G --.

H ....

I ..

J .--- K -.- L .-..

M -- N -.

O --- P .--.

Q --.- R .-.

S ...

T - U ..- V ...- W .-- X -..- Y -.-- Z --..

1 .---- 2 ..--- 3 ...-- 4 ....- 5 .....

6 -....

7 --...

8 ---..

9 ----.

0 -----

Period ......

Comma .-.-.- Interrogation ..--..

Colon ---...

Semi-colon -.-.-.

Quotation Marks .-..-.

The letter A is used for the word "Error"

" " K " " " " " "Negative"

" " L " " " " " "Preparatory"

" " N " " " " " "Annulling"

" " O " " " " " "Interrogatory"

" " P " " " " " "Affirmative"

" " R " " " " " "Acknowledgment"

The Morse Code of Signals is not hard to learn but it requires much practice to "receive" even when the message is sent slowly. The old-fashioned instruments were fitted with a ribbon on which the dots and dashes were recorded, but all modern operators depend on the ear.

The code is as follows:

[Ill.u.s.tration: The American Morse Telegraph Alphabet]

A .- B -...

C ...

D -..

E .

F .-.

G --.

H ....

I ..

J -.-.

K -.- L - M -- N -.

O . .

P .....

Q ..-.

R ...

S ...

T - U ..- V ...- W .-- X .-..

Y .. ..

Z ... .

NUMERALS

1.--.

2..-..

3...-.

4....- 5 --- 6......

7 --..

8 -....

9 -..- 0 -- [1 long dash, not 2 regular dashes]

[Ill.u.s.tration: NUMERALS]

_Punctuation_

Comma, . --. -- Semi-colon, Si Colon, Ko Period, .. -- --..

Interrogation, --.. --.

Quotation, Qn Paragraph, -- -- -- -- Exclamation, -- -- -- Parenthesis, Pn Brackets, Bn Dollar mark, Sx Dash, Dx Hyphen, Hx Underline, Ux

_Signals_

4. Start me.

5. Have you anything for me?

9. Train order (or important military message)--give away.

13. Do you understand?