Kenwood TW 4100 Owners Manual 2

Page 2

1. BEFORE OPERATION

Safety precautions

Never remove the case unless specified in this Instruc-
tion Manual. if the internal parts are touched accidental-
ly, a serious electric shock might occur.

Never touch intermal parts

if a metal object, such as a hair pin or a needle, comes
into contact with the power socket on the rear panel, a
dangerous electric shock may result. For families with
children, never permit children to put anything, especial-
ly metal, inside this unit.

Touching the power plug when your hands are wet may
result in a serious electric shock.

Never touch with wet hands

Never pull, bend or extend the power cord. This could
damage the power cord, resulting in a broken cord or
short-circuit.

Always grasp the plug.
9

In case of abnormal smell

If an abnormal smell or smoke is detected, immediately
turn the power OFF and pull out the power cord. Contact
your dealer or nearest Service Station.

Where to install the unit

Do not place the unit near a heat producing equipment
such as a radiator. Avoid direct sunlight.

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Do not store or use the unit in a dusty location or in a
moist atmosphere. Select a location where air is well

ventilated. I

To maintain good ventilation, do not put records or a
tablecloth on the unit, Place the unit at least 10 cm away
from the walls.

The unit may not function properly if used at extremely
low, or freezing temperatures.

Cleaning

Do not use volatile solvents such as alcohol, paint
thinner, gasoline, benzine, etc to clean the cabinet. Use
a silicone cloth or a clean dry cloth.

Benzine

Thinner

Silicone cloth

Page 13

Open channel criteria

If squelch is closed (BUSY Indicator is OFF) for more than
1.5 seconds, the channel is considered to be the open
channel.

Note:
After channel linkage has been completed you should
still check the frequency to confirm no one else is
transmitting.

4-7-8. Initiating Channel Linkage

1. If you want to initiate channel linkage

1. Press the DCL key to turn ON the DCL system. The
DCL indicator will turn ON.

2. When no signal is received, adjust the SOL control
until the BUSY indicator goes OFF.

3. Press the CHL key. Operation 4-7-6 1 through 4 will
be performed. The CHL indicator will flash and the
speaker will be muted while channel search is in
progress.

4, 4 beeps will be heard to signal that channel linkage
has been accomplished, and normal receiver audio
will be restored, but now on the new frequency.

A. Canceling channel linkage

Occasionally it will not be possible to perform channel
linkage due to crowded band conditions,or high am<
bient noise levels. If an open channel is not found within
30 seconds, you might wish to cancel the CHL function,
To cancel CHL operation simply press the PTT switch.

B. Recall function

It is possible that due to band conditions or interference
the distant station may not receive enough data to
change to the new frequency. If this occurs you can
return to the original operating frequency and try again
by simply pressing the CHL key. If you do this after your
transceiver has changed to the open channel the radio
will return to the original operating frequency and
retransmit the Channel linkage data.

C. Reverse operation

If after several attempts to complete channel linkage it

has not been possible to shift the distant station to the

new frequency you can manually return to the original
operating frequency and inform the distantstation vocal-
ly of the new operating frequency.

1. Press the RESET key. The CHL indicator will go OFF.

2. Press the RESET key again to return to the original
operating frequency.

3. Press the PTT switch and announce the new
frequency.

4. After confirming the frequency with the other sta-
tion(s) press the RESET key to return to the new
frequency.

5. Each time you press the RESET key you will switch
between the old and new frequencies.

D. Reinitiating channel linkage

If you want to try channel linkage after failures due to

interference that might have been present on the new

channel:

1. Press the RESET key. The CHL indicator should be
OFF.

2. Press the WT switch and ask the distant station(s) to
press their RESET keys,

3. Press the CHL key to initiate channel linkage.
The transceiver will search for a frequency that is not
occupied.

2. Distant station initiates channel linkage
. Ensure that the Access code of your station matches
that of the distant station.

. Press the DCL key. The DCL indicator will go ON.

3. Ask the other station to press the CHL key. A control
signal will soon be received from the distant station
if an open channel is found.

4. Thetransceiverwillswitchtothis new frequency,and
4 short beeps will sound to indicate channel linkage
has been completed.

N

3. Channel linkage notes

Channel linkage will not occur under the following

conditions even if the proper control code is received.

1. When channel linkage has just been completed and
the CHL indicator is ON.

2. If linkage would place the radio on the frequency
stored in Memory Channel 2.

3. When operating on one of the Split Memory Chan-
nels (Memory Channels 8 and 9).

4. During full duplex operations.

5. During reverse operations.

4-7-9. Call Sign Entry

Automatic transmitter identification is possible when
the CD10 Call Sign Display is attached to the external
speaker jack of the transceiver. Whenever a DCL signal
is received the call sign of the station will appear in the
CD-1O display.

Call signs are entered using Decimal ASCII codes. See
the chart below.

ASCII call sign data

A265 3:66 C:67 0:68
Ez69 F:70 6:71 H:72
|:73 J:74 K:75 L:76
M277 Nz78 0:79 P:80
0:81 R:82 $383 T:B4
U:85 V286 W:87 X288
Y189 2:90 Space:32

0.48 1:49 2:50 3:51
452 5:53 6:54 7:55
8.55 9257