Date:  29 August 1990

  To:  Radio Mod Server @ KJ6FY

From:  WA6YYM @ K3MC

Subj:  TM-431A Wide Band Transmit Modification



This modification allows the TM-431A transceiver to transmit and 
receive from 420.000 MHz through 444.975 MHz with essentially full
power throughout the band. 


1. Disconnect power

2. Remove top cover

3. Locate a green jumper wire sticking out of the front panel 
   assembly (behind VFO switch)

4. Cut the jumper in half and insulate the ends 

5. Assemble radio

6. This will reset the microprocessor and you will have to 
   reprogram all channels