MFJ-464 Instruction Manual CW Keyer/Reader
11
The Menus
Main Mode Menus
The main mode menus allow you access to the commonly used functions. There are four main
mode menus arranged in a “wrap-around” structure. When power on, keyer operation starts with
the main menu that was last used. The four main menus give you easier access to the frequently
adjusted settings and display their current values. Within each main menu, press the Mode
button briefly to view the next main menu. Turn the Set dial control to change the setting of the
current menu. Press and hold the Mode button for two seconds to enter the setup mode (see
below).
Speed
This menu is placed in the main menus to allow easier access to change the overall speed in the
range of 5 to 99 WPM. When s## is displayed, turn the Set dial control to change the overall
sending speed. Note that setting the overall speed higher than or equal to the Farnsworth speed
will disable Farnsworth spacing.
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. When w## is displayed, turn the Set dial control to change the
code weight. A higher weight produces a heavier sound, and a lower weight causes characters to
sound lighter.
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 t## is displayed, turn the Set dial control to
change the sidetone frequency. Note the one’s digit is not displayed and 1006 Hz is displayed as
t99. Most people prefer 700 to 800 Hz sidetone.
Reader Speed
This menu shows the code speed of the incoming Morse code message as ### WPM.
Maximum reader speed that can be displayed is 127 WPM.
Setup Mode Menus
The setup mode menus allow you to set up how the MFJ-464 works and behaviors. There are 19
setup mode menus arranged in a “wrap-around” structure. To access these setup menus, press
and hold the Mode button for two seconds. The setup menu that will display is the one that was
last used. When finishing, press the Mode button again to go back to the main mode for normal
operation. The LED will blink to indicate that you are in the setup mode. The Keying Output
and PTT Output are also disabled.
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