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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 # 912
MODEL: TS-940S
SUBJECT: TRANSMITTER HUM IN SSB

For reports of a low level audio hum sunerimposed on the normal 
transmitted audio, especially when the Speech Processor is used perform 
the following modification.


Parts required

C285 .01 uF 50 v disk ceramic capacitor CK45FlH103Z

Procedure:

On the IF UNIT (X48-1430-00) make the following changes:

a. Cut the foil patterns labeled A-E in figure 1. 
b. Add the jumpers wires labeled F-H in figure 1. 
c. Add capacitor C285 .01 uF 50 v as shown.

This change will be included on all units shipped after 9-15-86.