Bulletin:  KW9172
Vendor:    Kenwood
Subject:   TM-742/942 Mars/CAP Mod.


1. Detach the front panel from the main chassis.
2. Remove the bottom cover of the transcevier by removing the 4 screws on the
bottom of the cover and loosening the 4 screws on the sides of the unit.
3. Orient the radio so the bottom is up and the front panel area is near
your chest. Near the front panel area you will find a large board, this
is the Control Unit X53-346X-XX A/2. There are two rows of chip resistors
with only eight resistors mounted, out of sixteen. The X=resistor and the

- will equal a blank spot. The first is before and second equals after!!
 - - - -  X X X X  = before         - - - X  X X - -     = after
 X X X X  - - - -                   X X X -  - - X X
you are removing three chip resistors and replacing in new positions
This chip resistor might have the 473 on them, they are very small and
they do represent 0 ohms value. Short wire will work also. The c Micro chips.
4. Remove the chip resistors as noted and reinstall them as shown.
5. Reinstall the bottom cover of the transceiver and reattach the front
panel.
6. Reset the microprocessor. Press and hold the MR key whilR key. This will erase all operation
programmed data!!!
7. The frequency range after modifcation will be:
28 Mhz Band   RX 18.0 thru 54.0 mhz   TX 26.0 thru 45.0 mhz
50 Mhz Band   RX 40.0 thru 90.0 mhz   TX 46.0 thru 76.0 mhz
144 Mhz Band  TX 136.0 thr thru 235.0 mhz
440 Mhz Band  TX 410.0 thru 470.0 mhz
1.2 Ghz Band  RX/TX 1100.0 thru 1400.0 mhz
Hope this is of some help. 73 es hpe cu agn