MFJ MFJ-422E Instruction Manual Download Page 7

MFJ-422E/422EX Instruction Manual 

Electronic Keyer Paddle 

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 automatically 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 AA5CS 5 W /L 

/N

 

Number-inserts a contest serial number, in the range of 001 to 9999, 
into the message.  Jumpers JMP4 to JMP8 controls the way zeroes and 
nines in the serial number are sent.  Only three digits are sent for 
numbers less than 1000--use leading zeros when appropriate.  The 
serial number is automatically post-incremented each time it is sent and 
updated in the non-volatile memory.  Serial number 9999 will wrap-
around to 0001, skipping 0000 since it is not used.  The serial number 
is set to the same one as before when power on.  If a different serial 
number is desired, it must be programmed during power up.  To 
initialize the serial number, press and hold the 

Message

 button while 

turning 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 

Summary of Contents for MFJ-422E

Page 1: ...ad Starkville MS 39759 USA Tel 662 323 5869 Fax 662 323 6551 Model MFJ 422E 422EX COPYRIGHT 2017 M F J ENT ERPRISES INC VERSION 4A Electronic Keyer Paddle with Memory CAUTION Read All Instructions Bef...

Page 2: ...Auto button allows semi automatic bug and manual operations The keyer generates dots automatically when a squeeze or single lever key is used Dashes are manually made The keyer is completely manual wh...

Page 3: ...transmitter at a time This is an internal jumper selected option The unit is factory set to direct keying most solid state radios To change to grid block keying most radios with tube finals the power...

Page 4: ...de the case MFJ suggests the use of a good long life alkaline battery for longest operation 4 Remove the rubber foot from the bottom rear of the paddle 5 Remove the plastic cable clamp from the bottom...

Page 5: ...ubt try both jumper positions The transmitter will key continuously or not at all when the jumpers are connected to the wrong positions Keyer Operation 1 A nine volt battery or an optional power adapt...

Page 6: ...ped If deleting the first word of the message the keyer will play GO instead At the end of your message press and hold the Message button until the keyer sends an end of message character di dah di da...

Page 7: ...s in the serial number are sent Only three digits are sent for numbers less than 1000 use leading zeros when appropriate The serial number is automatically post incremented each time it is sent and up...

Page 8: ...ce 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 on...

Page 9: ...a Morse code message is sent to indicate the nature of the failure 8 The paddle the buttons and jumpers JMP3 to JMP9 are automatically tested for shorts to ground The LED should be off at this point 9...

Page 10: ...rn off the power Failure Message Meanings DH FAIL Dash level is shorted or improperly connected DT FAIL Dot level is shorted or improperly connected EE FAIL Non volatile memory circuitry is improperly...

Page 11: ...epetition di di dah dah di dit IMI Fraction Bar or Slash Bar dah di di dah dit DN End of Message Plus Sign or Cross di dah di dah dit AR End of Work di di di dah di dah SK Double Dash Equal Sign Pause...

Page 12: ...his manual If the manual does not reference your problem or your problem is not solved by reading the manual you may call MFJ Technical Service at 662 323 0549 or the MFJ Factory at 662 323 5869 You w...

Page 13: ...MFJ 422E 422EX Instruction Manual Electronic Keyer Paddle 12 SCHEMATIC...

Page 14: ...MFJ 422E 422EX Instruction Manual Electronic Keyer Paddle 13...

Page 15: ...is available by calling the Service Department at 662 323 0549 or the MFJ Factory at 662 323 5869 4 This warranty does not apply to kits sold by or manufactured by MFJ Enterprises Inc 5 Wired and test...

Page 16: ...MFJ 422E 422EX Manual Version 4A Printed In U S A 05 17 300 Industrial Park Road Starkville MS 39759 MFJ ENTERPRISES INC...

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