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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 # 1020
MODEL: TS-950
SUBJECT: Infinite SWR at Beginning of Transmission

Symptom:
During "Full Break-in" operation the SWR meter shows infinite SWR at the
beginning of transmit.  This results in a reduction of the transmitter power,
followed by a gradual increase to normal full power.  This symptom does not
occur with the antenna tuner set to "THRU". 

Cause:

Normally the RXB line should be 0 vdc at the beginning of transmit operations.
We have found that this does not always occur.  The length of time required 
for transmit power to return to normal is directly related to the time 
constant of capacitor C128 on the RXB line.     

Corrective Action:

Removing this capacitor corrects the above symptom, but might affect the
receiver sensitivity at a dial frequency of 100 kHz. Remove capacitor C128
on the RF Unit (X44-3100-00). 


DO NOT MODIFY THE UNIT IF THE SYMPTON IS NOT PRESENT.  
----------------------------------------------------- 


Caution: This modification requires soldering equipment rated for CMOS type
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.

Time required for this modification is 30 minutes or less.
Service Code:A:43 B:X44-3100 C:C128 D:91