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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 # 67
MODEL: TS-180S
SUBJECT: DFC INSTABILITY

                                                        
    TS-180S operators may report intermittent DFC instability,
    especially at 10Xhz even points. This may be characterized
    in some cases as FM'ing.
    
    On the VCO unit X50-1550-00, install a 330K ohm resistor between
    Qll G1, and the 8V line. Connect from L7 at C12 to Qll G1, at
    R35.
    
    No adjustments are necessary.
    
    NOTE:
    
    On page 37 of the Service Manual, the Board view of the VCO
    unit contains reversed callouts for Qll & Q15 FET's.
    D & S, and G1 & G2 are transposed.
    
    Please notate your Service Manual.