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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 # 853
MODEL: TR-8400
SUBJECT: Transmitter Freq Response, Voice or DTMF
Operator complaints of insufficient lows in transmit, or faulty Autopatch
operation traceable to incorrect twist (high to low tone group balance) may
be remedied by changing two capacitors at the mic amplifier input.
On the RX/TX unit X44-1340-11, change C62 and C65 from 0.1uf to 1.0uf, 35v
tantalum (CS15E1V010M) to increase low frequency transmitter frequency
response. Adjust Deviation (VR3) or mic gain (VR2) as necessary.
Installation time for this procedure is 1/2 or less.