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                             K E N W O O D
   >>>   A M A T E U R   R A D I O   S E R V I C E   B U L L E T I N   <<<
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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 # 813
MODEL: R-1000
SUBJECT: AGC-AM BANDWIDTH CHANGES

     AGC
      
      To shorten the ST AGC time constant, C2, the AGC capacitor may
      be changed from the original 4.7uF, or simply delete C2 by
      clipping out the 4.7uF as supplied. Access to this component
      is by removing the top case. On early models, C2 is located
      behind the MODE switch, and on later models, is located on the
      RX unit as C138 adiacent to connector 13.

    AM BANDWIDTH OPTIONAL WIRING
     
      If you desire substituting the AM 6KHz filter in favor of the
      12KHz for AM WIDE, and the 2.7KHz filter for AM narrow, install
      the optional BWK-1 connector kit in-line at connector 3 on the RX 
      unit X55-1250-00.
      
      24 HR CLOCK
      
      Contrary to popular rumor the clock module IS NOT convertable
      To 24 hour format.
      
BWK-1
                                                        
The BWK-1 is an optional AGC and Narrow bandwidth kit for early
production R-1000 receivers. It allows using the SSB 2.7KHz
filter for AM narrow, and includes a 1uF cap for shortening the AGC
time constant. This kit includes instruction to fabricate and
install the connector and to locate and replace the cap. This
does require some technical ability.

This kit is for serial numbers before: 0030001--0051600 & 0060001-
0060400 cap change and before serial numbers 010xxxx for selectivity.
Later production has the 1uF cap, and internally slectable AM
bandwidth.

  Contents of this Kit:                         Additional Requirement

1. Diode                                      45 Watt or smaller sold-
1. Male connector 3 pin                       ering pencil.           
1. Female connector 3 pin                     60/40 rosin core solder 
2. Female connector pins                      small cutting plier     
1. 1uF @ 16V (or greater) capacitor           #2 philips screwdriver  
1 inctrlantion cheet

                                             
                                             
                                             
Install as outlined on the reverse side of the instruction. Dis-
connect power before openinq the R-1000.

Connector fabrication READ BEFORE PROCEEDING

1. Cut the leads on the diode to approximately 3mm or 1/8 inch,
   and save the cut leads.
                                 
2. Lay the connectors, diode, leads and female connectors out just
   as pictured. Be sure the index on the diode and each connector
   is as shown:
  
3. Solder the diode and leads to the Female connector pins.
4. Insert the Female connector pins in the Female connector so the
   metal tabs lock into the plastic connector.
5. Solder the diode and leads to the Male connector. Fabrication
   is complete.