Shenzhen Friendcom Technology Development Co., Ltd.
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4.2.3.3 Second Column Features
4.2.3.3.1 Volts Protection
If the power supply of the radio is lower than low volts, the radio will stop working and only monitor the power
supply. Once the power supply become higher than High volts, the radio can start to work again. The
recommended Low volt is lower than 9V. The recommend High volt is 13.8V.
4.2.3.3.2 TX Protection
This feature, when enabled, limit the amount of time that user can continuously transmit. The time can be set
from 1 second to 60 seconds. When timeout, radio will release PTT pinout. If user want to transmit again, he or
she have to wait delay time (set by “stop when timeout”) after the radio released PTT.
4.2.3.3.3 De-emphasis Volume
FC-302 U2 radio output voice via SPK Pin with 9 levels volume. User is able to select appropriate volume for
the connected external speaker in this feature.
4.2.3.3.4 Power Save Mode
Here, you can enable Power save mode or disable. When enabled, radio will automatically switch between
Sleep and Standby to lower power consumption. The time of Sleep and Standby can be set in “Power save
time”.
However, for supporting fast attack time between TX and RX, the radio will keep in RX mode and the PLL
keep working even in power save mode. Only the intermediate frequency circuit is off.
