MFJ-464 Instruction Manual CW Keyer/Reader
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C# Character space – increases the inter-character space with # standard intra-character
spaces, where # is a single digit from 0 to 9. This allows the normally three-unit long
inter-character space up to 12 units long. Note the inter-character space is always at
least four units shorter than the word space. Therefore, you might have to increase
the word spacing before adjusting the character space.
Press either the “<” or “>” to decrease or increase character spacing, or enter one digit
0 to 9 to set the character spacing. Press ENTER to accept and exit, or press ESC to
cancel and exit.
D Decrement – decrements the serial number by one, effectively canceling the
automatic increment applied when last played from a message. The decrement
function accommodates re-sending the last serial number, as might be needed when a
repeat of a contest exchange is requested, or canceling the exchange with a station
that proved to be a “dupe”. The unit will echo a "D" (dah-di-dit) for every number
that is decrement. Decrement serial number 0001 rolls over to 9999, because the
number 0000 is not used.
F## Farnsworth – uses to enable Farnsworth mode and spacing. Farnsworth spacing adds
more time between characters to slow down the overall sending speed. The
advantage of this is that, by hearing the characters sent at a faster speed, you learn to
recognize each character by its distinctive rhythm, rather than by trying to "count
dits." This greatly assists you in copying Morse code at higher speeds. The
Farnsworth speed, however, must be higher than the overall speed. Setting ## to 00
or less than or equal to the overall speed will disable Farnsworth mode.
Press either the “<” or “>” to decrease or increase speed, or enter two digits 10 to 99
to set the Farnsworth speed or 00 to turn off Farnsworth mode. Press ENTER to
accept and exit, or press ESC to cancel and exit
Note: It is recommended the Farnsworth mode be disabled when sending with the
paddle. When Farnsworth mode is enabled, the paddle will send code at the
Farnsworth speed, not the overall speed.
G# Gap (word space) – increases the word space with # standard intra-character spaces,
where # is a single digit from 0 to 9. This allows the normally seven-unit long word
space up to 16 units long. Note the word space is always at least four units longer
than the inter-character space.
Press either the “<” or “>” to decrease or increase word spacing, or enter one digit 0
to 9 to set the word spacing. Press ENTER to accept and exit, or press ESC to cancel
and exit.
H Hand key – enters the hand key mode to use the SPACE key as a hand (straight) key.
The keyer responds with "HK" (di-di-di-dit dah-di-dah). Dots and dashes are made
manually by using the space bar on your keyboard. That is, keying follows closure of
the dot or dash paddle or the SPACE key, allowing hand-sent code. Normal keyer
operation is regained by squeezing both paddles or by pressing the ESC key.
Tip: The space bar on the keyer terminal does not work properly in hand-key
mode, because of the typematic delay of the computer keyboard.
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