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World of Ham Radio 1997
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1997-02-01
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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 # 851
MODEL: TS-830S
SUBJECT: NOISE BLAMKER OPTIONAL IMPROVEMENTS
Receiver Cross-modulation while using the noise blanker may be improved
by these optional component changes and additions. Realignment is not
required.
At the Noise Blanker level control VR8, change Rl9 from 22 ONHS to
15 OHMS (RD14BB2E150J)
On the AF AVR unit X49-1140-00 (vicinity of Q20) change: D22 from an
MV-13 to an MV-203 (V11-3379-16), R96 from 2.2k to 820 OHMS (RD14CB2E821J)
(vicinity of Q24)
R112 from 47K to 56K (RD14CB2E563J)
Across T2, add a 12KQ (RD14CB2E123J)
At Q21 add 2 pcs. 680 OHMS (RD14CB2E681J)
Q21
NBI ___ 680 ___|/---
| |\___
GND --- | |
| 680 R106
| | |
-------------
NOTE:1. Applies to various units before serial: 2010000,1120950,
and 1112058.