TM-742/942 Extended TX/RX Modification
ASI-0002, Feb. 23, 1993

This is a summary of the modification provided by Kenwood to expand the
transmit/receive ranges for the TM-742/942 tri-band radio.  The sheet is
ASI-0002, subject "TM-742/942 Beyond Mars/CAP Mod.  Guide" and date
"February 23, 1993".  The actual ranges of what the radio will transmit
are wider than what is stated in the table below.

Note: this mod involves desoldering and resoldering a chip resistor, if
you are not an expert in soldering chip components, get an expert to do
this for you.

1. Remove the front panel.
2. Remove the bottom cover from the radio.
3. Looking at the exposed bottom of the radio, orient it so it matches
   the diagram below.
4. Move the rightmost chip resister as shown in the diagram.  The numbers
   "1" thru "8" represent the positions of the 8 chip resistors in the
   original positions from the factory for U.S. radios.  The "x" is an
   empty pair of pads where the number "8" resistor should move to.
5. Reassemble the radio and reset the microprocessor (see manual).
6. Frequency ranges will be:
        28 Mhz band:    RX:  18.0 -  54.0
                        TX:  26.0 -  45.0
        50 Mhz band:    RX:  40.0 -  90.0
                        TX:  46.0 -  76.0
        144 Mhz band:   TX: 136.0 - 174.0
        220 Mhz band:   RX: 215.0 - 260.0
                        TX: 215.0 - 235.0
        440 Mhz band:   TX: 420.0 - 450.0
        1.2 Ghz band:   RX/TX: 1100 - 1400

Notes: not all radios will be able to tune the entire range.

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              Control Unit X53-346X-XX A/2         ||
                                                   ||
                                                   ||
                                        |          ||
                                        |          ||
                                =-=-=-=-+-=-=-=-=  ||
                                          5 6 7 8  || <-- move "8"...
                                =-=-=-=---=-=-=-=  ||
                                o o o o   o o o o  ||
                                =-=-=-=---=-=-=-=  ||
                                1 2 3 4         x  || <-- to the "x"
                                =-=-=-=-o-=-=-=-=  ||
                                                   ||
                                                   ||
                                            +-+    ||
                                            | |    ||
                                            +-+    ||
                                            2R7    ||
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                        Front Panel Area

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