Kenwood TK-780 Service Manual page 12

TK-780
Selective Call (SELCALL)
This is a voice call to a particular individual or group of
stations.
• Example of call types;
[100][ALL ] : <Group Call>
All the units whose fleet number is "100" are called.
[100][1000] : <Individual Call>
The unit, whose the fleet number is "100" and ID num-
ber is "1000", is called.
[ALL][ALL ] : <Broadcast Call>
All the units are called.
[ALL][1000] : <Supervisor Call>
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.
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 15 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.
• Status 80~99 (Special)
Status numbers from 80 to 99 are reserved for special
purposes. Entering these statuses from the DTMF keypad
can be inhibited.
Please notice that the following status numbers are used
for special purposes;
80~89 : Reserved for future use.
90 : Remote kill on. Disable all transceiver functions.
91 : Remote stun on. The transceiver cannot operate.
92 : Turns stun off.
93 : Spare.
94 : Acknowledgement status sent when the radio unit is
in stun mode.
95~98 : Reserved for future use.
99 : Emergency Status.
Note : Remote stun works with DTMF stun function also.
• Automatic Status Response
If you pre-select a status number and leave the radio in
the Status Mode, it can automatically respond with the se-
lected status number upon request from the base station.
(The request function is initiated by serial control on the
base station (Optional).)
12
OPERATING FEATURES
ment is required). Received Short Messages will be dis-
played in the same manner as a Status Message. A maxi-
mum of 15 received messages can be stored in the stack
memory. In the Stack Mode, 3-digit LCD indicates the re-
ceived Short Message as "Q1"~"Q15".
equipment is required). Received Long Message will not be
displayed or stacked in the radio memory but is output
through the COM (Data) port.
each emergency transmission.
• Emergency Status response
radio unit's response to reception of status 99 which is used
as an emergency status.
• Manual Dial
keypad. (DTMF microphopne is required.)
• Data TX with QT/DQT
a data transmission except for Selcall. A radio unit can re-
ceive a data message regardless of QT/DQT if the receiving
unit is not scanning.
• DMS Baud Rate
as a communication partner.
• Inter-Fleet Call
radio with a different fleet number (radio users can manually
dial a unit ID with a different fleet number).
• Status/Short/Long Message on Data Group/Channel
whether on the Data Group/Channel.
• Status/Short/Unit ID Message Serial Output
outputed or not to serial port.
Short Messase (Optional)
A maximum of 48 characters can be sent (External equip-
Long Message
A maximum of 4096 characters can be sent (External
Emergency Function
Emergency status 99 will be sent at the beginning of
Either "Horn" or "Alert" can be selected for the called
Other Functions
Fleet, ID and Status numbers can be entered from DTMF
Whether programmed QT/DQT is modulated or not with
FFSK data baud rate setting. The same rate must be set
1200bps :
Data communication is made in 1200bps. The communi-
cation area is much wider than 2400bps. Recommended
for repeater operation.
2400bps :
Data communication is made in 2400bps. The communi-
cation area is narrower than 1200bps, but it will decrease
the data traffic. Data rate 2400bps may not work prop-
erly depending on the repeater's characteristic.
Inter-fleet calls allow a radio of one fleet number to call a
Status/Short/Long Message transmission is made
Whether a received Status/Short message or PTT ID is