What should I do to use CTCSS/DCS functions on my Pxton PX-888S?
To enable and configure the QT/DQT(CTCSS/DCS) function, select built-in codes from the drop-down menu in Fig.9 as only with the same decoding and encoding will two channels be able to contact (Page 8).
From the official Pxton PX 888s manual, page 8
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