MFJ-452 CW Keyboard
Instruction Manual
5
In order to operate the different sections of the random code, you must first check the settings of the
parameters of the keyer. There are various settings for the parameters to isolate a particular group of
characters. After setting the parameters to activate the transmission of the characters, you must enter the
random code mode "F9" "R" then "Enter".
F
This command toggles Farnsworth mode on and off. This mode sets the speed of the random code
generator. Character speed is set to 18 WPM while keeping the overall word speed at the keyer's
current setting. If the keyer is set to 5 WPM in Farnsworth mode, it will send characters at 18 WPM
while inserting extra word-break and inter character timing to maintain an effective speed of 5
WPM. This feature allows novices to learn Morse characters by sound rather than by counting dots
and dashes. While in this mode, the keyers output is disengaged.
L
Toggles between 5-character word length or random word length from 1-8 characters. The keyer
signals "OK" after the command is entered. The keyer's default setting sends 5-character words in
alphabetic characters. To study certain characters, select
C
to choose a fixed character set. The
default set is
01
(A-F)
.
C
Toggles between enabling sets
N, P, G,
and
A
and enabling fixed character sets
01-09
. ( See #
command )
#
A one-digit entry between 1 and 9 is entered to choose a six-character set. The available sets, and
the entries needed to choose them, are as follows:
1
2
3
4
5
6
7
8
9
A
G
M
S
Y
4
.
_
;
B
H
N
T
Z
5
?
+
(
C
I
O
U
0
6
"
,
)
D
J
P
V
1
7
$
-
/
E
K
Q
W
2
8
'
=
Start
F
L
R
X
3
9
¶
:
Invitation to transmit
See Morse Code Table on page 7 for a more complete listing of the code.
A
Toggles random alphabetic characters on and off
P
Toggles random punctuation characters on and off
G
Toggles random prosign characters on and off
N
Toggles random numeric characters on and off
R
This command is used to start the random code generator after the code generator-defaults have been
set ( see
F
,
L, N, P, G, A, and C
). Press
Esc
to exit the code generator.
