Kenwood TR-851A Instruction Manual page 25

2. When the channel linkage system is operating:
[When the CHL switch is ON (CHL indicator will
be ON), the control signal will be automatically
transmitted for about 0.2 seconds.]
{a} Simplex mode
[ait] on
CHE taht flashes CHL lyht ON
_e Comtred seguiat
A - (abaut 0.2 seconds!
S: Start channel
A> Open channel
(b) OFFSET mode
ON prt on PTT OFF
ae
about T second
or Oe @ --—. @- -
$s A Ss a
4-7-3. DCL system keyboard
(Ll) DCL (Digital Channel Linkage) key
Press the DCL key to turn on the OCL system, press
it again to turn the system off. When the DCL
system is ON, the DCL light is ON. This key is valid
only in the FM mode. When the system is ON, it
waits for channel linkage, or DCS data during
receive; during transmission the system sends the
control signals at the beginning and end of each
transmission.
<2 CHL (Channel Linkage) key
If you press the CHL key while the DCL light is ON,
the DCL system begins a channel linkage operation
to shift the operating frequency of both your radio
and any distant station equipped with the DCL
system to the ist available open simplex frequency.
During the SCAN process, the CHL indicator will
flash. When the linkage has been completed, the in-
dicator will steadily be ON. If you press the CHL key
while the CHL light is ON, the system performs a
recall operation. (See page 29.)
"3° RESET key
If the RESET key is pressed during channel linkage
operation or after its completion, the channel linkage
operation is cancelled. (The CHL indicator goes
OFF.) When the RESET key is pressed after the
operation is cleared, the system performs a reverse
operation. (See page 29.) You can also use this key
to alternate between the open channel and the
original operating frequency or to abort the entry of
your station's call sign. Pressing the RESET key
when the digital code is displayed alternates bet-
ween the digital code display and the call sign
display.
4 C€.SQ (Code Squelch) key
Press the C.SQ key to turn on the code squelch func-
tion; press it again to turn the function off. When the
function is ON, the C.SQ light is ON. During digital
code display, the key functions as the standby in-
dicator.
'8; CS (Code Set) key
Use the CS key to enter the digital access code and
call sign into memory. Pressing this key alternates
between the digital access code display and
transmit/receive frequency display.
Press the key to turn on the digital code, display and
enable the entry of digital access code information
by using the numeric keypad.
Press the key again to turn the digital code display
off and turn the frequency display on.
4-7-4. Digital access code entry
Each of the OCL system functions operate between
transceivers that have the proper digital access
code. The digital access code is a 5 digit number
from 00000 to 99999, which yeilds approximately
100,000 different combinations.
Five access code memories are provided. You can
select which of the 5 codes you wish to use or listen
for. Only one of the codes will be used for transmis-
sion. The microprocessor controls which of the
codes is used for transmission when you are listen-
ing for more than one code. For example when an in-
coming code is received the microprocessor deter-
mines if it is one of the codes that it was waiting for.
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