MFJ-498 Instruction Manual
in the hand key mode. While in the hand key mode all other features of the MFJ-498
are disabled. The speed, weight, and tone for paddle operation is the same as that
for the keyboard.
The iambic paddle has a unique feature that the single lever paddle does not have.
The two key paddles are independent and can be squeezed together. When both
the dot and dash contacts touch ground, the MFJ-498 sends alternating sending
code elements, "
.-.-
" or "
-.-.
". This is called
iambic keying
.
Iambic keying has two modes: A and B. In iambic B mode. the keyer will send an
extra alternating element when you release both paddles. In iambic A mode, no
extra elements are sent. The iambic paddle modes, A and B, are selected with the
"
I
" and "
B
" commands. See the "Entering Commands" section on page 10.
Adjusting Code: Speed, Weight, And Tone
NOTE:
While changing parameters or loading memories, the MFJ-498 disables the
output key so that erroneous code is not sent over the air.
Code WPM Speed (F10)
Code speed is set using the front panel control and the
F10
key. The front panel
control changes the wpm speed range while the "
F10
" key changes speed within that
range. If you cannot set the speed high or low enough with "
F10
"
you must change
the range with the front panel control. When the front panel control is fully
counter-
clockwise
the speed range is from 5-24 wpm. When the front panel control is fully
clockwise
the speed range is from 24-100 wpm.
When you press "
F10
" the MFJ-498 sends a series of dot-dashes over the sidetone
speaker to indicate the current speed. There are two methods to change code
speed. The up and down arrow keys can be used to vary the speed gradually. Code
speed can also be set to an approximate words-per-minute by pressing two numbers
(i.e., 05 or 13). The speed will then change automatically. When you have found a
speed that is comfortable for you, hit the "
Esc
"
or
"
Enter
" key.
Weight (W)
Weight is set with "
F9
to enable command mode and press "
W
". After pressing "
W
",
a series of dot-dashes is played from the sidetone speaker. Pressing the up arrow
Summary of Contents for MFJ-498
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Page 23: ...MFJ 498 Instruction Manual...
