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                        Kenwood Service Centers

   Kenwood Service Corporation             Kenwood Service Center, East
   2201 East Dominguez Street              829 Lynnhaven Parkway, Suite 130
   Long Beach, California 90801            Virginia Beach, Virginia 23452
   Telephone 1-310-639-5300                Telephone 1-804-340-1702

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BULLETIN # 834
MODEL: TR-7800
SUBJECT: PULSE NOISE
                                                        
     Low level Pulse Noise reported in high power TX, or as a buzz
     from the speaker during TX, may be reduced or eliminated by
     the following steps.
     
     1. If not already present, install a shield (F11-0781-04) and
        two 1000pF capacitors (C52=1710-26) at the final amplifier
        module M57733.
                        
     2. On the RX unit X55-1270-10 add three additional 1000pF caps
        (C52-1710-26) and one additional 470pF cap (C52-1747-16) to
        pins 6,7,and 3 of Q3 to ground.
                                             
     lnstallatlon time for this procedure is approximately 1/2 hour.