Hytera PD402i, Owner'S Manual

Page: 16 / 20

11
TDMA Direct Mode
Description
TDMA Direct Mode allows the radio to divide the 12.5 kHz channel into
two alternative slots in direct mode. If the radio operates on a channel
with this feature enabled and one time slot is already occupied, it can
transmit and receive in the other free time slot.
Operation
With this feature enabled, you can manually switch to a digital channel in
TDMA Direct Mode or enter the TDMA Direct Mode by powering on the
radio on a digital channel in TDMA Direct Mode.
VOX
Description
VOX allows you to trigger the voice transmission by speaking directly
without holding down the
PTT key. When the voice detected by the
microphone (either external or internal microphone) reaches the volume
to trigger the transmission, it will be transmitted automatically.
Follow the instructions below when using the VOX
feature:
●
To use the VOX feature with an external microphone,
make sure the PTT/VOX switch is switched to “VOX”
before the radio is powered on and the VOX feature is
enabled.
Features and Operations
●
The VOX feature will be enabled for all the channels.
●
The VOX feature settings will not remain unchanged when
the radio is powered on and off.
●
After the VOX feature is enabled, switching the PTT/
VOX switch to “PTT” will disable the feature. In such case,
switching the PTT/VOX switch to “VOX” will keep the radio
transmitting. To make the radio function properly, reattach the
earpiece to enable the feature again.
Operation
Switch the PTT/VOX switch to
“
VOX
”
and attach the earpiece to the
radio. Press the programmed VOX key to enable this feature.
Auto Mode Switch
Description
Auto Mode Switch allows the channel with this feature to be configured
with digital and analog parameters at the same time, to receive digital
or analog voice calls, and to call back after switching to digital or analog
mode automatically.
Operation
To enable Auto Mode Switch feature, switch to the mixed channel
manually or turn on the radio on the mixed channel.
Caution