![background image](http://html1.mh-extra.com/html/icom/ic-f25sr/ic-f25sr_instruction-manual_4218067015.webp)
10
3
BASIC OPERATION
3
D
Frequency channel/CTCSS tone list (default)
Frequency (MHz)*
1
446.006250
446.018750
446.031250
446.043750
446.056250
446.068750
446.081250
446.093750
446.006250
446.018750
446.031250
446.043750
446.056250
446.068750
446.081250
Auto Scan
Tone (Hz)*
2
No settng
No settng
No settng
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
—
CH
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
*
1
All operatng channel frequences cannot be changed.
*
2
CTCSS tones can be programmed. You can use DTCS (Dgtal Tone
Code Squelch) nstead of CTCSS. (p. 15)