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MFJ-498 Instruction Manual 

Full 12 Month Warranty 

 

MFJ Enterprises, Inc. warrants to the original owner of this product, if manufactured by MFJ 
Enterprises, Inc. and purchased from an authorized dealer or directly from MFJ Enterprises, 
Inc. to be free from defects in material and workmanship for a period of 12 months from date 
of purchase provided the following terms of this warranty are satisfied. 

 

1.

 

The purchaser must retain the dated proof-of-purchase (bill of sale, canceled check, credit 
card or money order receipt, etc.) describing the product to establish the validity of the 
warranty claim and submit the original of machine reproduction or such proof of purchase to 
MFJ Enterprises, Inc. at the time of warranty service.  MFJ Enterprises, Inc. shall have the 
discretion to deny warranty without dated proof-of-purchase.  Any evidence of alteration, 
erasure, of forgery shall be cause to void any and all warranty terms immediately. 

 

2.

 

MFJ Enterprises, Inc. agrees to repair or replace at MFJ's option without charge to the 
original owner any defective product provided the product is returned postage prepaid to MFJ 
Enterprises, Inc. with a personal check, cashiers check, or money order for 

$7.00 

covering 

postage and handling. 

 

3.

 

MFJ Enterprises, Inc. will supply replacement parts free of charge for any MFJ product under 
warranty upon request.  A dated proof of purchase and a

 $5.00

 personal check, cashiers 

check, or money order must be provided to cover postage and handling. 

 

4.

 

This warranty is 

NOT

 void for owners who attempt to repair defective units.  Technical 

consultation is available by calling (601) 323-5869. 

 

5.

 

This warranty does not apply to kits sold by or manufactured by MFJ Enterprises, Inc. 

 

6.

 

Wired and tested PC board products are covered by this warranty provided 

only the wired 

and tested PC board product is returned.

  Wired and tested PC boards installed in the 

owner's cabinet or connected to switches, jacks, or cables, etc. sent to MFJ Enterprises, Inc. 
will be returned at the owner's expense unrepaired. 

 

7.

  

Under no circumstances is MFJ Enterprises, Inc. liable for consequential damages to person 
or property by the use of any MFJ products. 

 

8.

 

Out-of-Warranty Service: 

MFJ Enterprises, Inc. will repair any out-of-warranty product 

provided the unit is shipped prepaid.  All repaired units will be shipped COD to the owner.  
Repair charges will be added to the COD fee unless other arrangements are made. 

 

9.

 

This warranty is given in lieu of any other warranty expressed or implied. 

 

10.

 

MFJ Enterprises, Inc. reserves the right to make changes or improvements in design or 

Summary of Contents for MFJ-498

Page 1: ...yboard Operation 4 Paddle Operation 5 Adjusting Code Speed Weight And Tone 6 Code WPM Speed F10 6 Weight W 6 Sidetone Frequency T 6 Message Memories 7 Embedded Commands 7 Typical Settings for a Contes...

Page 2: ...9 seconds Message loop Adjustable Parameters Code speed is variable from 5 to 100 WPM weight varies from 5 to 95 Sidetone Speaker Internal sidetone speaker with adjustable volume and frequency Morse C...

Page 3: ...ntrolled by the keyboard interface The MFJ 498 has eight 4 000 character message memories which can be loaded by keyboard When saving a message embedded commands can be inserted that repeat the messag...

Page 4: ...supplied with an IBM AT compatible keyboard The MFJ 498X package does not include a keyboard The unit is guaranteed to support the supplied keyboard but may be used with other standard 101 key AT sty...

Page 5: ...rs or code sent by the user are played on the sidetone speaker This allows the user to hear what he is keying or typing Only when the keyer is used with a paddle is the code sent as soon as it is keye...

Page 6: ...MFJ 498 Instruction Manual pressed These characters are lost and will not display on the LCD As code plays the buffer will empty and eventually the bottom line will catch up with the top...

Page 7: ...s not included on the keyboard use the Alt key The MFJ 451 produces prosigns by removing the intercharacter spaces from characters of keys while the Alt key is pressed ex To produce the prosign AA hol...

Page 8: ...neous code is not sent over the air Code WPM Speed F10 Code speed is set using the front panel control and the F10 key The front panel control changes the wpm speed range while the F10 key changes spe...

Page 9: ...sound the present tone setting Use the up and down arrow keys to increase or decrease the sidetone setting Note that the tone will not affect your transmitted signal only the sidetone speaker frequenc...

Page 10: ...lete the saving of a message press Enter An end of message character will sound to confirm the save A programmed message can be replayed by pressing the appropriate function key F1 F8 The keyer will d...

Page 11: ...or at the end of a contest when most stations have already been worked Memory 2 is set for busy times when contacts are plentiful This memory is set with a simple quick message A listener will immedia...

Page 12: ...ar traffic between two stations in a simulated QSO Use this feature to reinforce your copy or to study for your code test Random Word Generator The random word generator sends words from the data base...

Page 13: ...the keyer sends alphabetic numeric prosign or punctuation characters Use the command mode and APNG to enable any or all character types to be sent The keyer s default is C off 5 character words with a...

Page 14: ...while character speed is set to 18 words per minute Farnsworth Hit ESC or ENTER Get ready to copy Press F9 and type R While you take copy you may notice that the characters being sent are also displa...

Page 15: ...ing an element For example a release during the dash in produces or A in iambic a mode but produces or R in iambic b mode C When C is off the random code generator sends character types alphabetic A n...

Page 16: ...outputs allowing practice operation The output is automatically disabled during memory message storing command mode operation status information and keyer setup P Enables on or disables off punctuatio...

Page 17: ...r OFF If the sidetone is disabled it will still play command messages and status information Z Starts the random word generator After entering Z the MFJ 498 will start sending random words that are fr...

Page 18: ...M S Y 4 _ B H N T Z 5 C I O U 0 6 D J P V 1 7 E K Q W 2 8 Start F L R X 3 9 Invitation to transmit See Morse Code Table on page 16 for a more complete listing of the code Q This command queries the un...

Page 19: ...MFJ 498 Instruction Manual...

Page 20: ...ment Alt Used for making prosigns by removing the intercharacter spacing of keys pressed while the Alt key is also pressed For example to produce the prosign AA hold the Alt key down press A twice the...

Page 21: ...MFJ 498 Instruction Manual Spacebar Inserts a word break space into the message in normal operation While the MFJ 498 is in handkey mode the spacebar is a straight key...

Page 22: ...ter set 9 A Random alphabetic characters on off B Iambic mode A or B toggle C Fixed 6 character sets on off on fixed sets off alphabet numbers punctuation and or prosigns E Starts the FCC Exam Simulat...

Page 23: ...MFJ 498 Instruction Manual...

Page 24: ...Morse character Keyboard key Morse character A A 5 5 B B 6 6 C C 7 7 D D 8 8 E E 9 9 F F 0 0 G G AAA H H MIM I I KR J J OS K K WG L L AF M M DN N N IMI O O DU P P _ _ IQ Q Q BT R R AR 1 S S SN 2 T T E...

Page 25: ...or 7 00 covering postage and handling 3 MFJ Enterprises Inc will supply replacement parts free of charge for any MFJ product under warranty upon request A dated proof of purchase and a 5 00 personal c...

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