Bulletin: KW7425 Vendor: Kenwood / TM-742 Subject: ADDING A DEDICATED 800-900 MHZ ANTENNA IN THE 440 MHZ UNIT a) Remove the power supply cable from the power supply or battery. b) Remove the 440 MHz band unit with care. For removal procedure see the INSTRUCTION MANUAL, 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). == On the Circuit board, look for solder points labeled 800. (KF2NC) e) Pass the cable through the notch and install the shield plate. f) Reassemble the main unit.