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Subject: TM742 freq extension .1
Original from JP1LRT to MODS@WW

Hello!!!! I have recieved message from N8QXP Charles. He asked me mdification
of KENWOOD TM-742. I found it on radio magazine. The modification is very 
simple. But my english is very very poor. I am afraid that you can not make
out. If you have any questions , please ask me again.  N8QXP charles saied
that he do not need graphics. But I need to graphics to explain. HI!

1. Open the lower panel of TM-742.

 ****** There are TWO version. Please check which version your rig is.******

                      FRONT PANEL IS UPER SIDE

      ___                               ___    ___    ___       <<<=== BAND SEL
   ---|-|-------------------------------|-|----|-|----|-|--------
  |                                                              |
  |______________*_______________________________*_______________|
  |     11                    2222                               |
  |    111                   22   22                             |
  |     11                      22                               |
  |11      22                                 |       
  |     11                   22222222                            |
  |                                                              |       
  |                                                              |       
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


2.   ******  FOR OLD VERSION ******
     SEE THE POINT OF [ 2 ] .If you can find a small board masked with black
     sponge , your TM-742 is OLD VERSION.
3.   On right side small board , there are three lines. Make short circuit
     with midlle line and lower line.


2.   ****** FOR NEW VERSION ******
     SEE THE POINT OF [ 2 ] . If you can not find a small board , your rig is
     NEW VERSION.
3.   SEE THE POINT OF [ 1 ]. There is a chip [ 2R7 ] . And below this chip
     [ 2R7 ] , there are small chip [ 473 ] .  

          [ GRAPHIC IS FOR JA VERSION ]
      *-*-*-*-*-*-*-*
              R R R X            R =  chip [ 473 ]
      * * * * * * * *
      * * * * * * * *            Make short circuit two X point.
              X     R            Maybe on your TM-742,there are chip [ 473 ]
      *-*-*-*-*-*-*-*            with different patern. This graphic is for
                                 JA version.  So please try until modification
                                 will succeed.


OPERATION

1. ON 144MHz  PRESS BAND SEL MORE THAN 1SEC .   MODE CHANGE AM <-> FM.
2. ON 430MHz                 DITTO              BAND CHANGE 430 <-> 870
3. ON 1200MHz                DITTO                          1200 <-> 870
4. [F] + BELL  ->  REPEATER DUAL RCV.
5. 118-136MHz  MODE CHANG TO AM AUTOMATICALY.
6. X-BAND REPEATER OPERATION.     SELECT ONE BAND BY [BAND SEL]  SELECT ONOTHER
   BAND BY [CONT SEL].   PRESS [F] KEY MORE THAN 1SEC. PRESS [MUTE] KEY.
   X-BAND OPERATION WILL WORK.
   PRESS [F] THEN [MUTE] KEY -> CANCEL X-BAND REPEATER OPERATION.

73s                DE JP1LRT @ JL1YVX.10.JNET1.JPN.AS
                              YOSHIHARU "KEI" TSUKUURA


 

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