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                             K E N W O O D
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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 # 1035
MODEL: TS-50S
SUBJECT: Antenna Lead Wire

Symptom:

Several users have reported a problem with the antenna lead connection, 
i.e. the lead that connects the antenna connector to the Filter Unit 
(X53-3120-XX). 

Originally this connection was made by  a zero ohm resistor.  If excessive
stress is placed on the antenna connector this lead is easily broken, with a
resulting loss of receiver sensitivity and transmitter power.  The use of a
small flexible jumper wire will increase the flexibility of this connection,
thus minimizing the effects of mechanical stress.
 
Parts Required:

Qty     Description       New Part No.         Circuit Description
1       Cable             E37-0445-05           W2

Procedure:

Remove the zero ohm resistor and replace it with the small piece of cable.  
Make a small U shaped loop when connecting the cable. 

                            . .
                           :   :  |
                           :   :..<< PL-259 (Antenna Connector)
    Filter Unit            :      |
    X53-3120-XX ===========:===== |
  --------------------------------|          


Caution:   This modification requires surface mount soldering equipment that 
is rated for CMOS circuits. It also requires familiarity with surface mount
soldering techniques. If you do not have the proper equipment or knowledge do 
not attempt this modification yourself. Seek qualified assistance from your
closest Kenwood Service Center (Long Beach, CA, or Virginia Beach, VA).

Time required for this modification is 30 minutes or less.                      
Service code A:05 B:X53-3120  C:W2 D:91