13 frequency scan, Channel scan – Furuno FS-1503 User Manual
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1.13 Frequency Scan
Channel scan
Scan is the function where the receiver watches 10/group user or ITU channels in succession at
predetermined intervals. The scan-stop signal level and scan-stop time can be changed on sys-
tem codes 9951 and 9952, respectively. AGC is automatically turned on when scanning is acti-
vated.
1. Recall user or ITU channel.
User channels
User channels are divided into 20 groups in the scan mode as below.
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1
9
0
-
0
o
t
1
0
-
0
2
9
1
-
0
o
t
0
1
-
0
3
9
2
-
0
o
t
0
2
-
0
4
9
3
-
0
o
t
0
3
-
0
5
9
4
-
0
o
t
0
4
-
0
6
9
5
-
0
o
t
0
5
-
0
7
9
6
-
0
o
t
0
6
-
0
8
9
7
-
0
o
t
0
7
-
0
9
9
8
-
0
o
t
0
8
-
0
0
1
9
9
-
0
o
t
0
9
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0
1
1
9
0
-
1
o
t
0
0
-
1
2
1
9
1
-
1
o
t
0
1
-
1
3
1
9
2
-
1
o
t
0
2
-
1
4
1
9
3
-
1
o
t
0
3
-
1
5
1
9
4
-
1
o
t
0
4
-
1
6
1
9
5
-
1
o
t
0
5
-
1
7
1
9
6
-
1
o
t
0
6
-
1
8
1
9
7
-
1
o
t
0
7
-
1
9
1
9
8
-
1
o
t
0
8
-
1
0
2
9
9
-
1
o
t
0
9
-
1
Figure 1-12 Scan groups