COMRADE R8, User Manual

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11.-ADDITIONAL FUNCTION
11.1. -LOW BATTERY ALERT
When the battery capacity is very low, the radio will flash red light and sound "Please
charge the battery" every 5 seconds to alert the user to recharge the battery. If you press
the [PTT] key, the radio will not transmit and always sound "Please charge the battery".
So please release the [PTT] key and charge the battery.
Note: if the battery voltage is too low, the radio may power off automatically.
11.2. -BATTERY SAVING FUNCTION (Set by PC Programming Software)
If battery save function is on, it will be automatically activated once there is no activity on
the channel and no operation to the radio (no key press and no knob select) which last
for 5 seconds. Pressing any key or receiving a signal will cause the radio to exit Battery
Save mode.
11.3. -BUSY CHANNEL LOCKOUT (BCL)
When BCL function is on, it prevents the radio from transmitting on a channel which is in
use.
Carrier: Press [PTT] key to transmit on a channel which is in use, the radio will sound alert
tone and stop transmitting. Please release [PTT] key to stop the alert tone and turn back
to receiving mode.
QT/DQT: If QT/DQT and BCL are set on the current channel, press the [PTT] key to transmit
on a channel which is in use, once the radio decodes failed, it will sound alert tone and
stop transmitting. Please release [PTT] key to stop the alert tone and turn back to receiving
mode.
OFF: You still can transmit on a channel which is in use.
11.4. -SELECT WIDE/NARROW BANDWIDTH
Bandwidth refers to the channel transmission capacity at a fixed time. Wide Bandwidth
(25 KHz) can simultaneously transmit more signals at a channel, so it's easier to receive
some weak signals, but meanwhile it's easier to be affected by noise signals. Narrow
Bandwidth (12.5 KHz) makes the voice clearer and occupies less channel resource, but
it's easier to miss some weak signals which may be useful to you. You can choose the
channel space according to your communication requirements via the software.
11.5. -QT/DQT
QT/DQT signal can be pre-programmed by programming software in the transceiver's
channels. If a channel is set up with QT/DQT signal, squelch can only be opened when
receiving the same QT or DQT signals from the other transceiver. If you make a call with
different QT/DQT signals in the same channel, the squelch is bare, the light is green.