30
162.550MHz
1
2
3
162.440MHz
162.475MHz
4
5
6
162.425MHz
162.450MHz
162.500MHz
7
8
9
162.525MHz
161.650MHz
161.775MHz
163.275MHz10
Is a technology that adds a frequency (67-254.1Hz) lower than the audio frequency to the audio signal
for transmission. It is also known as sub- audio because its frequency range is below the standard
audio, i.e., less than 300Hz.
CTCSS (Continuous Tone Coded Squelch System)
SUB-AUDIO
Is a continuous digital coded squelch system that serves the same purpose as CTCSS but uses digital
encoding as the condition for determining whether the squelch is open. It consists of a fixed code
group that is continuously transmitted. It is also called sub-audio digital or digital sub-audio because
its frequency is also below 300Hz.
I
n the non-standard analog sub-audio editing state, non-standard sub- audio can be directly input.
You can set CTCSS and CDCSS in the Menu 3 to Menu 9.
CDCSS (Continuous Digital Coded Squelch System)
In severe weather conditions such as heavy storms or hurricanes, BOM（Bureau of Meteorology）will
issue weather alerts and an audio tone at 1050 Hz, followed by subsequent weather reports on the
NOAA weather channel.
I
nternational Standard Frequency Table:
BOM
You can customize the settings for Side Key 2 and Side Key 3 to quickly enter the weather
forecast mode through menu items 40-42.
· Use the WXtoImg software to demodulate, decode, and convert the received signal into satellite cloud
images.
· This feature is only available in certain countries.
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