Crystal DBH034PK, User Manual

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this will also save any settings you changed. Alternatively, do not press any buttons for 8
seconds and the radio will automatically exit the menu and automatically save any
changed settings.
What is CTCSS
CTCSS (Continuous Tone-Coded Squelch System) modifies the transmission signal to
allow multiple users to share the same channel without disturbing each other. This is an
important feature on a radio when there are many radio users in the same area.
CTCSS continuously superimposes any one of about 50 low-pitch audio tones on the
transmitted signal, ranging from 67 to 254 Hz. When CTCSS is enabled, incoming signals
must be on the same CTCSS sub channel as the receiving radio or they will be filtered out.
Setting CTCSS function
Press the “(MENU/PWR) button” twice, the CTCSS channel number on the LCD will start
flashing.
To enable CTCSS, press the
“UP button” or “DOWN button” until CTCSS appears on
the screen, channel selection can be made between 1-38. Once the desired setting is
selected, press the
“(MENU) button” to save the setting. The unit will automatically
change back to the default screen with the CTCSS sub channel now on display.
To turn off CTCSS, press the
“UP button” or “DOWN button” until “00” appears. Press
the “(MENU) button” to save the setting. The unit will automatically
change back to the default screen and CTCSS will no longer be displayed.
FUNCTION- VOX
What is VOX?
VOX stands for Voice Operated Exchange, the feature allows a user to transmit simply by
talking into the radio without having to press the (PTT) BUTTON.
Setting VOX Mode
To access VOX mode, press the “(MENU) button” three times, VOX will display at the top
of the LCD. Press the “DOWN button” or “UP button” to select an option, “OFF-1-2-3” (1
is low voice sensitivity and will only pick up load noises, while 3 is high sensitivity and will
pick up soft noises). Once the desired option has been selected, press the
“(PTT)
BUTTON” and this will save the selected channel and the radio will return to the default
screen with the “VOX” displayed at the top. When VOX is activated, every time the radio
detects a noise it will automatically transmit.
NOTE: The use of VOX is not recommended in environments where noise is present (wind
or general loud background noise).
FUNCTION- CALL TONE
What is Call Tone?
A call tone is a 2 second signal that is sent out from the radio to let other users know you
would like to talk to them. It is an alternative option from just speaking into the MIC to
make the user stand out. The DBH034PK has 10 call tone options.
To transmit a call tone, quick press the
“(PTT) button” .