Model:         IC-475

 Division:      Amateur

 Note:          This service bulletin is meant for technical per-
                sonnel with experience working on solid state com-
                munications equipment.  Damage caused by im-
                properly installing this modification may cause
                ICOM to charge for subsequent repairs to the
                product.  ICOM does not warrant this modification.

 Bulletin #:    24487-001

 Subject:       Prevent a decrease in RF power output in high am-
                bient temperatures

 Procedure

  1.  Replace R55 on the RFYGR board (currently 22 ohm 1/8 watt)
      with a 33 ohm 1/8 watt resistor.