Scan Types; Preparation - Icom IC-7800 Instruction Manual

9
SCANS

■ Scan types

PROGRAMMED SCAN
Repeatedly scans between two scan edge frequencies
(scan edge memory channels P1 and P2).
Scan edge
P1 or P2
This scan operates in VFO mode.
MEMORY SCAN
Repeatedly scans all programmed memory channels.
Mch 2
�2
Mch 1 *"�1," "�2" and "�3" show that the channel
�1
is specified as the select memory.
Mch 99
�1
This scan operates in memory mode.

■ Preparation

• Channels
For programmed scan:
Program scan edge frequencies into scan edge mem-
ory channels P1 and P2.
For ∂F scan:
Set the ∂F span (∂F scan range) in the scan screen.
For memory scan:
Program 2 or more memory channels except scan
edge memory channels.
For select memory scan:
Designate 2 or more memory channels as select
memory channels. To designate the channel as a
select memory channel, choose a memory channel,
then push [F-3•SELECT] in the scan screen (memory
mode) or in the memory list screen.
• Scan resume ON/OFF
You can select the scan to resume or cancel when de-
tecting a signal, in set mode. Scan resume ON/OFF
must be set before operating a scan. See page 9-3 for
ON/OFF setting and scan resume condition details.
Scan edge
P2 or P1
Scan
Jump
Blank channel
Mch 3
Mch 4
�1
Mch 5
�1
Mch 7 Mch 6
�1 �3
• The scan function can be used on the main read-
out only.
• You can operate a scan while operating on a fre-
quency using the dualwatch or split functions.
∂F SCAN
Repeatedly scans within
F frequency
–∂
Scan
This scan operates in both VFO and memory modes.
SELECT MEMORY SCAN
Repeatedly scans all or one of 3 select memory channels.
Mch 2
�2
Mch 1 *"�1," "�2" and "�3" show that the channel
�1
is specified as the select memory.
Mch 99
�1
This scan operates in memory mode.
• Scan speed
Scan speed can be selected from 2 levels, high or low,
in scan set mode. See page 9-3 for details.
• Squelch condition
❍ Scan starts with squelch open
For programmed scan:
When tuning step is 1 kHz or less:
The scan continues until it is stopped manually— it
does not pause* even if signals are detected.
* The scan is paused when the squelch is closed and then
opened (scan resumes after 10 seconds has passed
when the scan resume is ON; scan is cancelled when
the scan resume is OFF).
When tuning step is more than 5 kHz:
The scan pauses on each step when the scan resume
is ON; not applicable when the scan resume is OFF.
For memory scan:
Scan pauses on each channel when the scan resume
is ON; not applicable when the scan resume is OFF.
❍ Scan starts with squelch closed
Scan stops when a signal is detected.
• If the scan resume is set to ON in scan set mode, the scan
pauses for 10 seconds when detecting a signal, then re-
sumes. When a signal disappears while scan is paused,
scan resumes 2 seconds later.
9-2
∂
F span area.
Start frequency
∂
+ F frequency
Scan
Jump
Blank channel
Mch 3
Mch 4
�1
Mch 5
Mch 7 Mch 6
�1 �3
�1