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World of Ham Radio 1997
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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 # 15
MODEL: VOX-3
SUBJECT: VOX SENSITIVITY WITH MC-50
There have been a few instances of improper VOX operation when
the MC-50 microphone is used. The sensitivity of the VOX-3 may be
increased by removing R-4 and connecting R-3 directly to ground.
Also install a 220mfd 25VDC electrolytic in parallel with C-6.
(These parts are all on the X54-1010-00 board.) If the VOX delay
is insufficient, change C-10 (on the X54-0001-00 board) from
3.3mfd 50VDC to a lOmfd 50VDC capaciter.