MFJ-441 Instruction Manual
Jumper Settings
JMP 1 JMP 2
D
D
D
G
G
D
G
G
JMP 3
A
B
* Factory defaults
JMP 4 JMP 5
L
L
L
H
H
L
H
H
JMP 6 JMP 7
L
L
H
H
L
H
L
H
JMP 8
L
H
JMP 9
5
SlimLine Econo Keyer
Keying Mode
Direct *
Invalid
Invalid
Grid Block
Iambic Mode
A *
B
Leading Zeros
none
0
O *
T
Other Zeros
0 *
0
O
T
Nines
9 *
N
Speed Range
L
5 – 65 WPM *
H
10 – 40 WPM