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World of Ham Radio 1997
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WOHR97_AmSoft_(1997-02-01).iso
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asb0813.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 # 813
MODEL: R-1000
SUBJECT: AGC-AM BANDWIDTH CHANGES
AGC
To shorten the ST AGC time constant, C2, the AGC capacitor may
be changed from the original 4.7uF, or simply delete C2 by
clipping out the 4.7uF as supplied. Access to this component
is by removing the top case. On early models, C2 is located
behind the MODE switch, and on later models, is located on the
RX unit as C138 adiacent to connector 13.
AM BANDWIDTH OPTIONAL WIRING
If you desire substituting the AM 6KHz filter in favor of the
12KHz for AM WIDE, and the 2.7KHz filter for AM narrow, install
the optional BWK-1 connector kit in-line at connector 3 on the RX
unit X55-1250-00.
24 HR CLOCK
Contrary to popular rumor the clock module IS NOT convertable
To 24 hour format.
BWK-1
The BWK-1 is an optional AGC and Narrow bandwidth kit for early
production R-1000 receivers. It allows using the SSB 2.7KHz
filter for AM narrow, and includes a 1uF cap for shortening the AGC
time constant. This kit includes instruction to fabricate and
install the connector and to locate and replace the cap. This
does require some technical ability.
This kit is for serial numbers before: 0030001--0051600 & 0060001-
0060400 cap change and before serial numbers 010xxxx for selectivity.
Later production has the 1uF cap, and internally slectable AM
bandwidth.
Contents of this Kit: Additional Requirement
1. Diode 45 Watt or smaller sold-
1. Male connector 3 pin ering pencil.
1. Female connector 3 pin 60/40 rosin core solder
2. Female connector pins small cutting plier
1. 1uF @ 16V (or greater) capacitor #2 philips screwdriver
1 inctrlantion cheet
Install as outlined on the reverse side of the instruction. Dis-
connect power before openinq the R-1000.
Connector fabrication READ BEFORE PROCEEDING
1. Cut the leads on the diode to approximately 3mm or 1/8 inch,
and save the cut leads.
2. Lay the connectors, diode, leads and female connectors out just
as pictured. Be sure the index on the diode and each connector
is as shown:
3. Solder the diode and leads to the Female connector pins.
4. Insert the Female connector pins in the Female connector so the
metal tabs lock into the plastic connector.
5. Solder the diode and leads to the Male connector. Fabrication
is complete.