MFJ-495 Memory Keyer Instruction Manual
30 © 2001-2009 MFJ Enterprises, Inc.
Press either the “–” or “+” (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.
E## Edit – allows the operator to append onto or edit an existing message memory, where the first
# is the message number 1 to 8 and the second # is the bank A to D. The keyer will display
your message to the last word. You can then enter more text or erase existing words, just like
the procedure when loading a message.
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 “+” (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 “+” (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.
I# Iambic – enables iambic A or B mode where # represents A or B, or disables iambic
operation with # = N. The keyer will respond with "A" (di-dah), "B" (dah-di-di-dit), or
"OFF" (dah-dah-dah di-di-dah-dit di-di-dah-dit). Press ESC to cancel and exit.
J#### PTT hang time – sets the PTT (push-to-talk) hang time to #### millisecond, where ####
represents four digits in the range of 0001 to 9999. This controls the time between when CW
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