Kenwood TK-480 - Manual (Page 9)

8
TK-480/481
OPERATING FEATURES
5. Option Signalling
5-1. DTMF
Built-in DTMF decoder is available for option signalling.
It is possible to use individual call, group call, D.B.D.
(Dead Beat Disable). D.B.D. is used with DTMF only.
If the option signalling matches, a predetermined action
will occur.
If option signalling matches on a group which is set up
with option signalling, the option signalling indicator ( ) will
flash and option signalling will be released. The transpond
or alert tone will sound.
If the selective call alert LED is set up, the orange LED
will flash.
While option signalling matches (or if option signalling is
deactivated when you are transmitting), you can mute or
unmute ID/QT/DQT/Carrier.
■ AND/OR
You can select AND or OR for option signalling match
conditions.
Alert/Transpond
AND QT/DQT/ID+DTMF; Option matches = Action
OR QT/DQT/ID+DTMF; Option matches = Action
AF mute open
AND QT/DQT/ID+DTMF; Option matches = Action
OR QT/DQT/ID; Signalling only matches = Action
With OR set up, alert/transpond will not function with
only DTMF.
With OR set up, AF mute will not release when only
DTMF matches.
With a conventional group not set up with QT or DQT,
only the carrier is considered when signalling matches.
■ Auto Reset
If option signalling matches a group set up with option
signalling, option signalling is released. After matching op-
tion signalling, option signalling will temporarily reset auto-
matically.
■ Dead Beat Disable
If the D.B.D. code matches, a predetermined action will
occur. Whether option signalling is activated or not, when
D.B.D. matches on any group, the transceiver will become
TX inhibited or TX/RX inhibited. While D.B.D. is active, if the
D.B.D. code + “#” code is received, D.B.D. will disactivate.
When D.B.D. matches, transpond will function. Alert will
not be output, and option signalling match icon will not ap-
pear.
5-2. MSK
Built-in MSK (FleetSync™ : Fleet-ID) decoder is available
for option signalling. When the group ID matches, squelch
remains muted while the station waits for reception of
proper MSK signal. When MSK signal matches, squelch
unmutes.
■ AND/OR
AND : QT/DQT/ID + MSK to unmute. MSK matches =
alert tone
OR : QT/DQT/ID to unmute. MSK matches = alert tone
6. Alphanumeric Two-way Paging Function
(FleetSync™)
6-1. General
T h e A l p h a n u m e r i c T w o - w a y P a g i n g F u n c t i o n
(FleetSync™) is a Kenwood proprietary protocol. It enables
a variety of paging functions.
6-2. ID Construction
A radio unit ID is defined by a combination of 3-digit Fleet
and 4-digit ID numbers. Each radio unit must be assigned its
own Fleet and ID numbers.
6-3. PTT ID
A pre-programmed unique ID (Own) can be sent at the
beginning of transmission and/or the end of transmission to
identify which radio unit is on air.
When selecting (Sel) for MSK ID, the radio calls the spe-
cific Fleet user the same as selective call.
6-4. Selective Call (SELCALL)
This is a voice call to a particular individual or group of
stations.
■ Example of call types;
[100][ALL ] :
All the units whose fleet number is “100” are called.
[100][1000] :
The unit, whose the fleet number is “100” and ID num-
ber is “1000”, is called.
[ALL][ALL ] :
All the units are called.
[ALL][1000] :
All ID “1000” are called regardless of their fleet number.
■ Unit ID Encode Block
Encode ID Block can be set to limit manual dial ID. The
radio unit will not accept an ID other than these IDs which
are entered from the keypad. If Inter-fleet Call is enabled,
block ID setting affects each fleet group.
6-5. Status Message
Using a 2-digit number, you can send and receive a Sta-
tus message which may be decided in your talk group. Each
Status may be displayed with 16 alphanumeric characters if
programmed in the radio. A maximum of 9 received mes-
sages can be stored in the stack memory, and it can be re-
viewed after reception. If the message memory becomes
full, the oldest one will be erased. The stack memory will be
cleared by turning radio power off.