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World of Ham Radio 1997
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WOHR97_AmSoft_(1997-02-01).iso
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asb0824.txt
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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 <<<
==============================================================================
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
==============================================================================
BULLETIN # 824
MODEL: TR-9000
SUBJECT: TR-9000 CW, SSB TX INSTABILITY
Complaints of FMing in SSB, or CW chirp may be eliminated
by minor changes to the TX mixer circuit.
On the TX unit X56-1370-10, perform the following changes:
1. Cut the LT foil path.
2. Install a 47 OHM resistor on the foil side of the PCB.
3. Remove R27, 3.3 K and delete.
4. Jumper the cut foil.
5. Install a 2.2K resistor from Q12 collector to the
modified LT foil on the foil side of the PCB.