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MFJ -422E Instruction Manual
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MFJ -422E Instruction Manual

Electronic keyer paddle with memory
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Electronic Keyer Paddle
with Memory
Model MFJ-422E/422EX
INSTRUCTION MANUAL
CAUTION: Read All Instructions Before Operating Equipment !
MFJ ENTERPRISES, INC.
300 Industrial Park Road
Starkville, MS 39759 USA
Tel: 662-323-5869 Fax: 662-323-6551
COP Y RI GHT
2017 M F J E NT E RP RI S E S , I NC.
V E RS ION 4A

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Summary of Contents for MFJ MFJ-422E

  • Page 1 Electronic Keyer Paddle with Memory Model MFJ-422E/422EX INSTRUCTION MANUAL CAUTION: Read All Instructions Before Operating Equipment ! MFJ ENTERPRISES, INC. 300 Industrial Park Road Starkville, MS 39759 USA Tel: 662-323-5869 Fax: 662-323-6551 COP Y RI GHT 2017 M F J E NT E RP RI S E S , I NC.
  • Page 2 MFJ-422E/422EX Instruction Manual Electronic Keyer Paddle Introduction The MFJ-422E Electronic Keyer Paddle with Memory is an iambic keyer and paddle combination. The MFJ-422EX keyer installs on your MFJ-564 or Bencher type paddle. Both are microprocessor controlled keyers that provide iambic key operation and dot-and-dash memory to make sending perfect code easier.
  • Page 3 8. The Key Output circuit supports both positive and negative keyed radios. The MFJ-422E can only key one type of transmitter at a time. This is an internal jumper selected option. The unit is factory set to direct keying (most solid state radios).
  • Page 4 7 for the meanings of these jumpers. 3. If you wish to use a nine volt battery, install one now. A nine volt battery fits in the battery clip located inside the case. MFJ suggests the use of a good long-life alkaline battery for longest operation.
  • Page 5 2. A 12 Vdc power supply may also be used to power the MFJ-422E. A 2.1mm coaxial plug with a positive center and a negative sleeve should be used to power this unit.
  • Page 6 MFJ-422E/422EX Instruction Manual Electronic Keyer Paddle lever in. The Iambic operation feature allows sending of alternate dots and dashes when both paddles are squeezed. The first paddle contacted will determine whether a dot or dash occurs first. 6. The user may select either Iambic A or B according to his or her preference.
  • 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. Decrement-decrements the serial number. Serial number 0001 will decrement to 9999, skipping 0000 since it is not used.
  • Page 8 MFJ-422E/422EX Instruction Manual Electronic Keyer Paddle Pause-inserts a timed pause of mm minutes and ss seconds into the /Pmmss 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 Resume-suspends message playback to allow insertion of paddle entry.
  • Page 9 MFJ-422E/422EX Instruction Manual Electronic Keyer Paddle A self test is included to perform testing of the paddle, the buttons, the controls, and the audio circuitry. At any time, turn off the power to stop the self test. To perform this test: 1.
  • Page 10 MFJ-422E/422EX Instruction Manual Electronic Keyer Paddle A test is also included to perform testing of the non-volatile memory (EEPROM) circuitry. This procedure can also be used to reset the contest serial number to 0001. To test the non-volatile memory: 1. Turn off the power.
  • Page 11 MFJ-422E/422EX Instruction Manual Electronic Keyer Paddle Morse Code Character Set • - - • di-dah dah-dit - • • • dah-di-di-dit dah-dah-dah - - - - • - • • - - • dah-di-dah-dit di-dah-dah-dit - • • - - • -...
  • Page 12 MFJ Technical Service at 662-323- 0549 or the MFJ Factory at 662-323-5869. You will be best helped if you have your unit, manual and all information on your station handy so you can answer any questions the technicians may ask.
  • Page 13 MFJ-422E/422EX Instruction Manual Electronic Keyer Paddle SCHEMATIC:...
  • Page 14 MFJ-422E/422EX Instruction Manual Electronic Keyer Paddle...

  • Page 15: Limited 12 Month Warranty

    MFJ Enterprises, Inc. at the time of warranty service. MFJ Enterprises, Inc. shall have the discretion to deny warranty without dated proof-of-purchase.
  • Page 16 MFJ ENTERPRISES, INC. MFJ-422E/422EX Manual 300 Industrial Park Road Version 4A Starkville, MS 39759 Printed In U.S.A. 05/17...

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