6.CTCSS (Continious Tone Coded Squelch System)
License free radio's operating on the 462.5625~467.7250 Mhz
frequency band, like the kids walkie talkie , have 22 available
channels channels. If there are many walkie talkie users in your
neighborhood, there is a chance that some of these users are
operating on the same channel. To prevent that you receive
unknown signals from other users, sub-channels will be needed.
Two radio's will only be able to communicate with each other not
only operating on the same channel but also the same sub-channel.
There are two kind of sub-channels :
●
Continuous Tone Coded Squelch System (CTCSS)
When using CTCSS, a low frequency tone (between 67 and 250
Hz) will be transmitted along with the voice signal. There are 38
available tones to choose from. You are free to choose one of
these 38 available tones. Due to filtering, these tones will
generally not be audible so they will not disturb the
communication.
7.CTCSS
●
Press the PTT-button(14) twice : The current CTCSS code
flashes on the display.
●
Press the
▲
-button(7) or the
▼
-button(8) to change to another
code.
●
Press the PTT-button(14) to confirm and return to stand-by mode.
Note:
To disable CTCSS, select code "0F? for CTCSS in the menu.
When pressing PTT button to confirm, "OF" will be displayed.
7
Summary of Contents for RT602
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