MFJ-498 Instruction Manual
Entering Commands
During normal operation, the
F9
key is used to enter the command mode. When the
command mode has been enabled, the keyer responds by signaling "CO". The unit
is now ready to receive one of the available one-character commands listed below
through the keyboard or paddle. The keyer responds to an invalid entry by returning
to normal mode.
A
Enables, "on", or disables, "off", alphabetic characters when the "
C
" option is
"off" and using the random code generator.
B
Use Iambic A or B to toggle between the iambic A and iambic B modes. The
keyer responds with the current mode "A" or "B". Iambic modes A and B work
when you squeeze both paddles together. See "I", Iambic On/Off. In iambic
B mode the keyer plays the alternating element after the paddles are released
during an element. Iambic A mode does not produce an alternating element
when the paddles are released during an element. For example, a release
during the dash in "
.-
" produces "
.-
" or "A" in iambic a mode but produces "
.-.
"
or "R" in iambic b mode.
C
When "
C
" is "off" the random code generator sends character types:
alphabetic "
A
", numeric "
N
", prosigns "
G
", and/or punctuation "
P
". When "
C
"
is "on" the random code generator sends fixed character sets "
1 - 9
". See the
A, N, G, P, and # commands.
E
The "
E
" option starts the FCC exam simulator. The exam simulator give an
FCC style exam for practice. You will hear QSOs between 2 random
simulated stations.
F
This command toggles the Farnsworth mode in the random code generators.
When in Farnsworth mode character speed is set to 18 WPM while the overall
word speed remains at the keyer's current setting. If the keyer is set to 5
WPM in Farnsworth mode, it will send characters at 18 WPM while inserting
extra word-break and inter character timing to maintain an effective speed of 5
WPM. This feature
makes
beginners learn Morse characters by sound rather
than by counting dots and dashes.
G
Enables, "on", or disables, "off", prosign characters when the "
C
" option is
"off" and using the random code generator.
Summary of Contents for MFJ-498
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