MFJ-495 Memory Keyer Instruction Manual
10 © 2001-2009 MFJ Enterprises, Inc.
adjusted with the function buttons. Press F1 button to decrease speed and F2 button to increase speed.
Press F3 button to decrease weight and F4 button to increase weight. Press Menu button, either paddle or
the ESC key to exit.
Speed
This menu is placed in the main menus to allow easier access to change the overall speed for the current
position of the Speed control in the range of 5 to 99 WPM. The speed shown on the display corresponds
to the current position of the Speed control. When
SPEED is displayed, press the Down button will
decrease the overall sending speed and the Up button will increase it. Note that setting the overall speed
higher than or equal to the Farnsworth speed will disable Farnsworth spacing.
Whenever the speed is changed using the front panel Speed control, the LCD momentarily displays the
change for approximately two seconds so you can see exactly what speed you just changed to. Also, the
Speed main menu is shown momentarily after the power is turned on, and then changes to the last-used
main menu.
Farnsworth
This menu is placed in the main menus to allow easier access to change the Farnsworth speed in the range
of 10 to 99 WPM. When
FARNSWORTH is displayed, press the Down button will decrease the
Farnsworth speed and the Up button will increase it. The Farnsworth speed must be higher than the
overall speed. To turn Farnsworth off, reduce the Farnsworth speed to the same speed as the overall
speed.
Weight
This menu is placed in the main menu to allow easier access to change the weight of code elements in the
range of 25% to 75%. Weight is the duty cycle of a continuous string of dots, which is 50% for perfect
code. The weight shown on the display corresponds to the current position of the Speed control. When
WEIGHT is displayed, press the Down button will decrease the code weight and the Up button will
increase it. Notice that adjusting the weight here changes both the CCW Weight and CW Weight to the
same percentage, resulting in a constant code weight. A higher weight produces a heavier sound, and a
lower weight causes characters to sound lighter. Once set, weight remains constant and independent of
the speed. For variable weight that adjusts with the speed, use the CCW Weight and CW Weight setup
menus (see below).
Tone
This menu is placed in the main menu to allow easier access to change the audio frequency of the
sidetone in the range of 305 to 1006 Hz. When
TONE is displayed, press the Down button will decrease
the sidetone frequency and the Up button will increase it. Most people prefer 700 to 800 Hz sidetone.
Changing Memory Banks
To change the memory banks from any main menu, press and hold the Menu button and then within two
seconds press the F1 button for bank A, F2 button for bank B, F3 button for bank C, or F4 button for bank
D. The keyer will respond with “BA”, “BB”, “BC” or “BD” for the selected bank. Each memory bank
has eight message memories (see “The Memory” section on page 36 for more details).
Miscellaneous
A shortcut to the message menus from any main menu is to press and hold the Menu button and then
within two seconds press the Dit paddle to select the MSG1-MSG4 menu or press the Dah paddle to
select the MSG5-MSG8 menu.
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