MFJ-422D/422DX Instruction Manual
Electronic Keyer Paddle
MFJ-422D
ELECTRONIC KEYER PADDLE
Page 1: ...MFJ 422D 422DX Instruction Manual Electronic Keyer Paddle MFJ 422D ELECTRONIC KEYER PADDLE ...
Page 2: ...e to access the jumper inside the case Locate jumper JMP9 next to the microprocessor and set it to the H position Note Power must be off when changing the jumper settings 4 The Volume control located on the left side of the unit adjusts the sidetone level of the inter nal speaker Turn the control clockwise to increase the volume and counter clockwise to de crease the volume 5 The Weight control va...
Page 3: ...422DX now using the four internal jumpers to the type of output keying re quired the desired Imabic mode and the speed range Refer to items 3 7 and 8 of the pre vious section for locations and meanings of these jumpers also refer to the Jumper Settings section on page 3 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 batter...
Page 4: ...on Keyer Operation 1 A nine volt battery or an optional power adapter may be used to supply power to the keyer 2 The keyer should be turned on by pressing the Power button and the LED is lit 3 The Semi Auto Auto button should be in the out position for automatic operation 4 The user should now start sending with the paddle and adjust volume tone weight and speed to his or her preference 5 The dot ...
Page 5: ...Repetition 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 or Break dah di di di dah BT Semicolon dah di dah di dah dit KR Colon dah dah dah di di dit OS Apostrophe di dah dah dah dah dit WG Quotation Mark di dah di di dah dit AF Hyphen or Dash dah di di di...
Page 6: ...ah dah HM Executive Follows di di dah di di dah IX Break in Signal dah dah dah dah dah TTTTT Emergency Signal di di di dah dah dah di di dit SOS Relay of Distress dah di di dah di di dah di dit DDD Jumper Settings JMP1 JMP2 Key Mode D D Direct D G Invalid G D Invalid G G Grid Block JMP3 Iambic Mode A A B B JMP9 Speed Range L 5 65 WPM H 10 40 WPM Factory defaults ...
Page 7: ...MFJ 422D 422DX Instruction Manual Electronic Keyer Paddle 6 SCHEMATIC ...
