Kenwood TK-290 Service Manual page 4

TK-290
2. Scan Operating
2-1. Scan Types
• Single Group Scan
You can scan all valid (ADD) channels in the displayed
group that can be selected with the group selector.
• Multiple Group Scan
You can scan all valid (ADD) channels in the all valid
(ADD) group.
2-2. Scan Start Condition
One or more non-priority channels must be added to all
channels that can be scanned. The transceiver must be in
normal receive mode (PTT off).
When you activate the key or the toggle switch (to right
position) programmed to the scan function, the scan starts.
The scan icon "SCN" lights and "SCAN" or revert channel
(programmable) is indicated on 7-digit alphanumeric display.
2-3. Scan Stop Condition
The scan stops temporarily if the following conditions are
satisfied.
1) A carrier is detected, then signalling matches on chan-
nels for which receive the signalling is set by the pro-
gramming software.
2) A carrier is detected on the channel for which receiving
signalling is not set by the programming software or
when the monitor (signalling cancel) function is activated.
2-4. Scan Channel Types
1) Priority channel 1 is the most important channel for the
scan, and always detects a signal during scan and when
the scan stops temporarily.
2) Priority channel 2 is the next important channel for the
scan, and always detects a signal during scan and when
the scan stops temporarily at a channel other than priority
channel 1.
3) Non-priority channels detects a signal during scan. For
the channels that can be selected with the group or chan-
nel selector when the scan does not occur, adds an indi-
cator "A" lights.
2-5. Priority Channel Setting
Priority channels 1 or 2 can be set as follows with the
programming software (KPG-38D).
1) Specify priority channels 1 or 2 as fixed priority channels.
2) Make selected channels, priority channels.
3) Operator delectable
Specify the initial channel before the operator changes it.
2-6. Scan Type According to the Priority Channel
1) When no priority channels are set : Only the non-priority
channels are scanned.
If a non-priority channel stops temporarily, it stops until
there is no signal on the channel.
4
OPERATING FEATURES
2) When one priority channel is set : Either priority channel
3) When two priority channels are set : The non-priority
2-7. Revert Channel
and set by the programming software (KPG-38D).
1) Priority 1
2) Priority 1 with talkback
3) Priority 2
4) Priority 2 with talkback
5) Selected channel
6) Last called channel
7) Last used channel
8) Selected with talkback
2-8. Scan End
position) programmed to the scan function during scan
mode, the scan ends.
grammable) display goes off.
1 or 2 is scanned.
If a non-priority channel stops temporarily, a priority chan-
nel signal is detected at certain intervals.
If a priority channel stops temporarily, it stops until there
is no signal on the priority channel.
channel, priority channels 1 and 2 are scanned.
If a non-priority channel stops temporarily, priority chan-
nel 1 and 2 signals are detected at certain intervals.
If priority channel 2 stops temporarily, the priority chan-
nel 1 signal is detected at certain intervals.
If priority channel 1 stops temporarily, it stops until there
is no signal on priority channel 1.
The revert channel is used to transmit during scanning
The transceiver reverts to the priority channel 1.
The transceiver reverts to the priority channel 1.
If you press PTT during a resume timer (dropout delay
time, TX dwell time) or calling, you can transmit on cur-
rent channel to answer to the call however revert channel
is set to priority channel 1.
After resume time, scan re-starts and transmission chan-
nel is return to priority channel 1.
The transceiver reverts to the priority channel 2.
The transceiver reverts to the priority channel 2.
If you press PTT during resume timer (dropout delay
time, TX dwell time) or calling, you can transmit on cur-
rent channel to answer to the call however revert channel
is set to priority channel 2.
After resume time, scan re-starts and transmission chan-
nel is return to priority channel 2.
The transceiver reverts to the channel before scanning or
the channel that you changed during scan.
The transceiver reverts to the last called channel during
the scan.
The transceiver reverts to the last used (transmitted)
channel during scan. "Last used" revert channel includes
talkback function.
The transceiver reverts to the channel before scanning or
the channel that you changed during scan.
When you reactivate the key or the toggle switch (to left
The scan icon "SCN" and "SCAN" or revert channel (pro-