>copied from packet:
 Msg# TSF  Size #Rd  Date  Time From   MsgID        To
38132 BF   4720   0 13-Mar 1600 4X4CV  59967_4X1RU  MOD@WW ()
 Sb: KENWWOD MIC MODIFICATION.

     The following concerns modificatio of some Kenwood Microphone.
    ===============================================================

    Note: What follows is just suggested, proceed at your own risk.

    If you have a Kenwood TM-xxxE (European version) trans', Than your mic,
    probably has 1750 Hz baton, Which is useless in some countries (not if
    you are a jammer Hi). This baton can Probably be transformed to have
    another transceiver function.

    I myself, tested the above & succeeded with both: TM-241E & TM-741E (of
    which the mic's slightly differ).

    -----------------------------------------------------------------------

    GENERALLY (at least in the two above) the 1750 Hz baton provides
    aprox' 7.5v (when depressed), in order to generate the tone. While the
    other 3 control baton on the mic provide lower voltage levels (aprox'
    1.5v & 3.5v if i remember correctly). The idea is simply to disconnect
    the 7.5v at the baton input & to connect the other voltage level (1.5v
    or 3.5, I forgot which).
    To do this follow the next modif' stages.

    -----------------------------------------------------------------------

    MODIFICATION STAGES:

    1) Disconnect the 7.5 voltage level by cutting the only jumper on the
    print. (to be sure measure 7.5v relative to ground on it, on the 741E
    mic it is symbolized by J1)



             the TM-741E                      the TM-241E
        ZDDDDDDDDDDDDDDDDDDDDDD?         ZDDDDDDDDDDDDDDDDDDDDDD?
        3             ZDDDDDD? 3         3             ZDDDDDD? 3
        3             3 ptt  3 3         3             3 ptt  3 3
        3             3switch3 3         3             3switch3 3
        3             @DDDDDDY 3         3             @DDDDDDY 3
        3                 DD   3         3            DD        3
        3                 J1   3         3            J3        3
        3                      3         3                      3
        3                      3         3                      3
        @DDDDDDDDDDDDDDDDDDDDDDY         @DDDDDDDDDDDDDDDDDDDDDDY


    2) Short the 2 connections on:

             the TM-741E                      the TM-241E
        ZDDDDDDDDDDDDDDDDDDDDDD?         ZDDDDDDDDDDDDDDDDDDDDDD?
        3  ZDDDD?              3         3    ZDD?              3
        3  3    3              3         3    3  3              3
        3                      3         3                      3
        3  3 3  3 3  3 3  3 3  3         3  3 3  3 3  3 3  3 3  3
        3   O    O    O    O   3         3   O    O    O    O   3
        3   3    3    3    3   3         3   3    3    3    3   3
        3   3    3    3    3   3         3   3    3    3    3   3
        3                      3         3                      3
        3 1750  VFO   MR   PF  3         3 1750  VFO   MR   PF  3
        3                      3         3                      3
        3                      3         3                      3
        3Microphone T91-0398-XX3         3Microphone T91-0398-X53
        @DDDDDDDDDDDDDDDDDDDDDDY         @DDDDDDDDDDDDDDDDDDDDDDY
 The new function becoms:
            ^                                 ^
            3                                 3
            3                                 3
    default:call                              call
programable:PF4                               ----

     ZDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD?
     3 :  [[221100     73 DE Ze'ev 4X4CV @4X1RU.ISR.MDLE    001122[[  : 3