Blackbox Seal series, Руководство пользователя

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Channel Selecting
Rotate the channel to choose your desired channel from
1~16 channels.
You can select the channel according to the number or
symbol mark at the bottom of the knob. Also, you can
operate according to channel annunciation.
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Transmitting
To talk, hold down the PTT key and speak into the
microphone with normal voice. Please keep the
microphone at least 2 inches away from your mouth.
Tip:
1. Hold down the PTT button and the LED indicator
glows red, the radio begins to transmit.
2. If the LED indicator flashes red, the battery power is
insufficient. The radio can not transmit when the battery
power is not enough for normal operation.
Receiving
Release the PTT button, the radio begins to receive. You
can hear the other voice if you receive a call on your
current work channel. If call signal is too weak or you
set very high squelch level, you can not hear the call.