MFJ Enterprises MFJ-498, Manual

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MFJ-498 Instruction Manual
LCD Contrast Adjustment
The MFJ-498 has a contrast adjustment pot accessed through the case on the left
side. Insert a small screwdriver or flat tuning tool into the pot and turn to adjust the
LCD viewing angle. The LCD will widen the viewing angle as you turn clockwise or
close the viewing angle as you turn counter-clockwise.
Basic Operation
The MFJ-498 is simple to operate. After turning the unit on, it will send the
characters "ON" in Morse code over the sidetone speaker and display "MFJ-498
Display Keyboard Keyer" on the LCD. This tells you the MFJ-498 is ready for
operation.
Start sending with a paddle or keyboard. Adjust the volume and speed to your
preference. If the speed is still too fast or too slow, adjust the range of the speed
knob by pressing
F10 . See Adjusting Code on page 6.
All characters or code sent by the user are played on the sidetone speaker This
allows the user to hear what he is keying or typing.
Only when the keyer is used with a paddle is the code sent as soon as it is keyed.
When using the keyboard you may type ahead of the code that is being transmitted.
This allows you to enter words and phrases faster than the transmitted code. The
buffer permits smoother code with less pauses. You can fix misspelled words and
think about your next sentence while the previous sentence is being sent.
When you are entering commands or saving memories the key outputs are disabled.
This keeps all erroneous code off of the air.
Keyboard Operation
The keyboard on the MFJ-498 is like that of a computer, not like a typewriter. A key
is pressed and immediately released. If a key is held down, a character will be
repeated until the key is released. To make word breaks press
Space Bar . Press
Space Bar several times to make a longer break.
After a keyboard key is pressed, a character will be saved in a 150 character type-