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Channel Settings · Menu 4

R-CTCSS

RX CTCSS tone — squelch only opens when this analog sub-audible tone is detected on the incoming signal.

Menu #
4
Options
Off + 51 tones (67.0–254.1 Hz)
Default
Off
Category
Channel Settings

How to access it

  1. Press MENU on the radio to open the menu.
  2. Scroll with up/down arrows to menu 4: R-CTCSS.
  3. Press MENU again to enter the setting.
  4. Use up/down to change the value, then MENU to save, or EXIT to cancel.

Related channel settings

  • CHL Name— Channel name — the label displayed for the current memory channel
  • RX Frequency— Receive frequency for the current VFO or channel
  • TX Frequency— Transmit frequency for the current VFO or channel
  • R-DCS— RX DCS code — squelch only opens when this digital coded sub-audible squelch stream is detected
  • T-CTCSS— TX CTCSS tone — continuous sub-audible tone transmitted during PTT, typically required to access repeaters

See the full RT-900 menu reference for all menu items.