Bulletin:  SB510
Vendor:    Kenwood TM-741
Subject:   800-999MHZ receiver modification with\ dedicated antenna


TM-741A/E 900 MHz BAND RECEPTION WITH 430-450 MHZ UNIT
======================================================

Band change
-----------

To change to the 900-MHz band, select the 430-450 MHz
band, then press and hold down the [MHZ] key for at
least a second. Now 850.000 (initial setting) is
displayed.

To return to the 430-450 MHz band, press the [MHz] key
again for at least a second.


Adding the secondary 900-MHz dedicated antenna in the 430-450 MHZ unit
----------------------------------------------------------------

a) Remove the power supply cable from the power
   supply or battery.

b) Remove the 430-450 MHz band unit with care.
   For removal procedure see the INSTRUCTION MANUAL -
   UNIT INSTALLATION, reversing the order of the
   procedure and... using the brain!

c) Remove the shield plate (12 screws.)

d) Solder a coaxial cable (0.8 D) to the input
   side of IC9 (center is alligned with the IC9,
   ground at right side and is marked 800, 2 square pads
   not far up from the 430-450Mhz input)

e) Pass the cable throungh the notch were the grey plug is and install
   the shield plate to the band unit.

f) Reassemble the main unit.

Radio will store 800-900 info in memories.