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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 # 922
MODEL: RC-10
SUBJECT: HANG TIME/TIME OUT TIMER
The RC-10 hang up time and timeout timer (Cross-band Repeater function)
are preset at the factory for three seconds and three minutes respectively.
Should it become neccessary, the RC-10 can be reprogrammed to one of four
different times for each function. The following procedure will allow the
user to select the best settings for his requirements.
Procedure:
1. Disconnect the RC-10 from all other equipment.
2. Using a thin plastic tool, remove the KENWOOD badge from the handset.
3. Underneath the badge are two holes in the hand set. Remove the machine
screw from the left hole.
4. At the bottom of the handset locate two small holes in the plastic
molding (see figure 1). Press a narrow alignment tool into both holes
and pry the handset apart (be careful not to break the short wires inside).
5. Remove-the PTT and AF level knobs.
6. Remove the three 3 x 6 mm machine screws that secure the metal
shield to the handset.
7. Lift the AF unit and shield to expose the Keyboard assembly.
8. Locate resistors R8 - 11 on the Keyboard assembly (figure 2).
9. Connect the left side of the resistors to the ground side (right side)
of capacitors C8-11. Use the timing chart and figure 2 for timing
configurations.
10. Reassemble the handset. Route all wires under the cut outs on the
shield. Do not Pinch any wires.
Hang Time Time Out
Sec R10 R11 Sec R8 R9
0 0 0 0 0 0
.25 0 1 30 0 1
.50 1 0 60 1 0
3.0 1 1 180 1 1