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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 # 934
MODEL: TM-221A
SUBJECT: Final Module Hints 

When the Final module is replaced in a TM-221A, there is a
possiblity that the transmit power will not go higher than
47 watts, even witht he APC turned OFF.  This is due to 
variances in input impedance of Final Modules.  To correct
this condition, an 8 pF capacitor can be added between the 
input of the module and ground.  With some modules, a value
between 8 pF and 15 pF will be required.  Try to choose a
value as close to 8 pF as possible to prevent oscillation.
The capacitor should be designated as C19 on the Final Unit
(X45-1360-02).

Required Part

8pF Ceramic Capacitor   Part # CC45CH1H080D

Alignment:

1.	Turn the APC off (TX-RX unit VR-6: Clockwise).

2.	Adjust TC3 TC4 (TX-RX) for maximum power supply current.
	Since the APC is off, the Final will produce very high
	power output.  It is important to perform this step as
	quickly as possible.

3.	Adjust the APC for 45 Watts.

Time required for this modification is 0.25 hrs or less.