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3 DMR function
Using VOX (VOX Function)
Type
Description
Operating the transceiver
Note
Configuration using FPU
'■ Standard model
■ Basic model
VOX is the function to transmit audio just by speaking into a microphone without pressing the PTT switch.
This function can be used when a user cannot press the PTT switch, for instance, when a user is using both
hands for other tasks.
VOX Type
If VOX Function Preset is enabled, you can select either "VOX" or "Semi-VOX".
VOX :
The transceiver automatically detects an audio signal from the microphone.
When the voice level from the microphone is higher than the reference level (VOX Gain Level), the
transceiver automatically starts transmission.
Semi-VOX :
Transmission is started by pressing PTT and transmission continues even after PTT is released.
If VOX Function Preset is disabled, you cannot select the VOX Type.
VOX Gain Level
VOX Gain Level is the input sensitivity of the microphone for activating VOX. This function is used to adjust
the VOX to work properly based on the user's voice tone or the surrounding noise when a user transmits by
speaking into a microphone.
VOX Delay Time
VOX Delay Time is the duration for which the transceiver retains the transmission after VOX transmission. If
the transceiver reverts to receive mode too quickly after a user pauses speaking, the last part of the speech
may not be transmitted. To avoid this situation, VOX Delay Time needs to be configured so that the whole
speech is transmitted and that the transmission retention time is not too long.
Upon the elapse of the time configured in VOX Delay Time after no audio is inputted to the microphone, the
transceiver terminates VOX transmission.
VOX transmission is terminated.
If audio is inputted to the microphone while VOX Delay Time is counting down, VOX Delay Time is reset and
the audio transmission continues.
Cancel by PTT
Cancel by PTT is the function to disable VOX by pressing the PTT switch when VOX is enabled.
If VOX is disabled by Cancel by PTT, VOX is enabled by pressing and holding the PF_BTN[VOX Function]
or by executing "VOX" after entering Menu Mode by pressing the PF_BTN[Menu] .
If the PF_BTN[VOX Function] button is not configured and "VOX" is not configured in Menu Mode, VOX can
be enabled by turning the transceiver OFF and ON again.
VOX Proceed Tone
VOX Proceed Tone is the tone that sounds from the transceiver to notify that the audio transmission becomes
available after the transmission is started by using VOX.
If VOX Proceed Tone is enabled, a VOX Proceed Tone that notifies that the audio transmission becomes
available sounds from the transceiver after the transmission is started by using VOX.
Transmit Inhibit while Receiving
Transmit Inhibit while Receiving is the function to restrict the VOX transmission while the speaker of the
transceiver is unmuted.
This function can be used to prevent VOX from being activated by audio emitted from the speaker.
If Transmit Inhibit while Receiving is enabled, the VOX transmission cannot be done while the speaker is
unmuted.
If Transmit Inhibit while Receiving is disabled, the VOX transmission can be done even while the speaker is
unmuted.
The following functions do not work when VOX Type is set to "Semi-VOX".
Cancel by PTT, VOX Proceed Tone, Transmit Inhibit while Receiving
VOX Function Preset, VOX Type, VOX Gain Level, VOX Delay Time, Cancel by PTT, VOX Proceed Tone,
Transmit Inhibit while Receiving :
Edit > Optional Features > Optional Features 2 > Conventional > VOX
Press PF_BTN[VOX] to execute PF_BTN[VOX Function].
Transceiver behavior :
VOX is turned on.
icon is displayed.
If Function Guide is enabled, "VOX On" is announced and
Tone A does not sound.
If Function Guide is disabled, only Tone A sounds.
Press PF_BTN[VOX] to execute PF_BTN[VOX Function].
Transceiver behavior :
VOX is turned off.
Tone B sounds and
17
icon is turned off.
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