SUB-AUDIO
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
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standard audio, i.e., less than 300Hz.
CDCSS (Continuous Digital Coded Squelch System)
CTCSS (Continuous Tone Coded Squelch System)
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
In severe weather conditions such as heavy storms or hurricanes, the National Oceanic and
Atmospheric Administration (NOAA) 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:
NOAA
162.550MHz
1
2
3
162.400MHz
162.475MHz
4
5
6
162.425MHz
162.450MHz
162.500MHz
7
8
9
162.525MHz
161.650MHz
161.775MHz
163.275MHz10
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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