Notebook of Gerard Henderson Cowan - Part 1

 Front cover ~ see original
 

inside cover ~ see original
 

 (1)
MORSE CODE

Long Numerals

(2)
BEST METHOD OF LEARNING
Opposites ( A . _   N _ . ) (T_    E .) (O _ _ _  S . . .)
Grouping letters which are alike in the
first three elements
 

Phonetics
Owing to many letters of the
alphabet being of similar
sound the following are
pronounced phonetically
to avoid confusion
A ack           P pip
B beer         T tock
D don          V vic
M emma     S esses
In the morse alphabet there are
never more than four elements in
any letter. Those occouring most
frequently have part number of elements 

Station Signals 

Miscellaneous Signals Continued
 

(3)
Diagram - see original document
(4)

WHY SIGNALLING IS NECESSARY
Army communications are
an extremely important 
factor in warfare and the
maintenance of these are is
essential therefore some
signalling system is necessary.
The lines of communication
running from, say Div Hdqrs to
Brigade, Btn and Coy Hdqrs might
be likened to the brain and
nerve system.
From Brigade to Btn Hdqrs there
are three methods of signalling
I Visual signalling
II By telephone (voice & buzzer)
III By dispatch rider or runner.
between Btn & Coy Hdqrs
I Visual signalling
II By telephone (buzzer. Voice
seldom used
III By dispatch rider or runner. 

(5)
 Code Time
Diagram - see original document
In  Code time letters are used to
represent the figures, A for 1 o'clock
B 2 oclock and so on the
remaining four minutes
between each hour marked
on the clock face are
represented by R.S.W, and X
respectively. Thus 3.35 pm
would be C.G. pm and
3.38 pm would be CGW pm
(6)
Continued from Page (4)
The t telephone must always
be used when possible
so as to economise in
men
When out of the line
signallers should always
be allowed to carry on
their own work, so as
to become as expert as
possible
Good Signalling depends
upon observing precise length
of dots and dashes and
separating intervals and
keeping a uniform
speed throughout that
message 

"A" Form.   Army Form C. 2121.
MESSAGES AND SIGNALS.   No. of Message
Prefix   Code   m.
Office of Origin and Service Instructions.
Words. Charge.
Sent
At   m.
To 
By 
This message is on a/c of:
 Service.
(Signature of "Franking Office.")
Recd. at     m.
Date 
From
By
TO  
 * Senders Number.     Day of Month.   In reply to Number     AAA
From
Place
Time
The above may be forwarded as now corrected.
Censor
(Z)
Signature of Addressor or person authorized to telegraph in his name.
*This line should be erased if not required.
(8)

A Form
The A form, no C2121, white in
color, is for out going
messages only. It is divided
into five separate parts.
I Preamble
II [Address] to
III Text
IV From
V Space Z
[Address] To
The address address to contains
the address of person or
persons to whom the
message is going, it contains
his name, rank, and
where he is. It can be
written in block or
running hand
Text
The text is divided into
two parts.
Between the text and address to
is a break and another at end of 
cont 

(9)
"A" Form.   Army Form C. 2121.
MESSAGES AND SIGNALS.   No. of Message 187
Prefix  DS   Code   RCA m.
O of O and Service Ins.
ZA
URGENT SIGNAL 
Words. 21  Charge.
Sent
At  10.30 A m.
To KB
By Sig J Back
This message is on a/c of:
Service.
Signature of R Office 
Recd. at     m.
ZA / 21 12 17
Date 
From
By
TO  CAPT JACKSON
9^th Btn RIBEMONT
Senders Number.     Day of Month.   In reply to Number     AAA
ZA 31                                 Third                    ZA 31
Report immediately to Brigade
Hdqrs with thirty men
FROM Bde - Gen James
PLACE Buire
TIME  10 PM
The above may be forwarded as now correct.
(Z)  J James BDE - Gen
Sergeant Signal
Signature of Addressee
(10) 

A Form Continued
The first of these spaces is
again divided into four
under these headings,
Sender number
Day of Month
In reply to number
A.A.A.
In space marked Sender's
number is put Station Call
and consecutive no of
message thus, ZA37
Space marked Day of Month
is just put the date