MFJ-441 Instruction Manual
SlimLine Econo Keyer
4
Embedded Commands:
While in the message recording mode you may use embedded commands for special features. To
use an embedded command simply store the multi-character embedded command code within
your message.
/D
Decrement – decrements the serial number. Serial number 0001 will decrement to 9999,
skipping 0000 since it is not used. This feature allows a serial number to be sent twice in a
message.
Example: UR RST 559 559 SN /N /D SN /N
/G#
Gap – inserts a gap of # standard intra-character spaces into the message, where # is a
digit in the range of 1 to 9 (0 can be used but not practical). Invalid numeral code will auto-
matically default to zero. This command is used to exaggerate inter-character and word
spacing.
/L
Loop – creates a message loop (message repeat). Note that any character recorded after
"/L" will not be sent.
Example: BEACON DC7XJ 5 W /L
/N
Number – inserts a contest serial number, in the range of 001 to 9999, into the message.
Jumpers JMP 4 to JMP 8 controls the way zeros and nines in the serial number are sent.
Only three digits are sent for numbers less than 1000 - use leading zeros when appropri-
ate. The serial number is automatically post-incremented each time it is sent. Serial number
9999 will wrap-around to 0001, skipping 0000 since it is not used. The serial number reset
to 0001 when power on. If a different serial number is desired, it must be programmed dur-
ing power up. To initialize the serial number, press and hold the Message button while turn-
ing the power on until the keyer plays "GO" (dah-dah-dit dah-dah-dah) and the LED
flashes. You must then enter four numbers in Morse code for a valid serial number, most-
significant digit first (invalid numeral code will automatically convert to zero). All numbers
must be in the proper Morse code format. For example, the number "1" must be "di-dah-
dah-dah-dah" and the number "0" must be "dah-dah-dah-dah-dah". When four numbers
are entered, the keyer will automatically send an end of message character "+" (di-dah-di-
dah-dit). The keyer then resumes with normal operation when the LED stops flashing. The
serial number can be set from 0000 to 9999 (0000 will automatically convert to 0001).
Example: YOU ARE CONTACT NR /N
/Pmmss
Pause – inserts a timed pause of mm minutes and ss seconds into the message.
Four numbers must follow "/P". Invalid numeral code will automatically default to zero.
Example:
TIMEOUT 1 HOUR
/P6000
TIMEOUT 1.5 MIN
/P0090
TIMEOUT 1 HR 40 MIN 39 SEC
/P9999
/R
Resume – suspends message playback to allow insertion of paddle entry. Once paddle
sending is finished, press the Message button again to continue the message.
/S
Space – inserts an extra standard word space into the message. This command yields the
same result as "/G7" but uses one less unit of memory.
//
Slash character – stores the slash character "/" into the message.
