Sub-tones:
The
Tone
column shows the sub tone assigned for each frequency. There are 50 QT
(CTCSS quiet tones) and 208 DQT (digital quiet tones that can be selected. These
tones are used to privatize conversations and reduce interference from other users
on the same frequency. A CTCSS/QT/DQT tone is a sub-audible tone which allows
you to ignore (not hear) calls from other parties who are using the same channel.
When you receive a signal that has a tone different from the one set up in your
transceiver, you will not hear the signal but only the LED will show frequency activity.
Likewise, signals that you transmit will only be heard by parties whose
CTCSS/QT/DQT tone matches the tone set up in your transceiver.
There are 38 CTCSS standard tones (1-38) plus 12 extra QT tones. The 38 tones are
common on other 446 MHz radios such as the Zartek RX-8, COM8 or PT8. If the tone
is left “OFF”, the frequency is left “open” to receive communication from any tone, but
your transmitter will not be decoded by a radio with a tone.
Battery Save Function
The Battery Save function decreases the amount of power used when a signal is not
being received and no operations are being performed (no keys are being pressed,
and no switches are being turned) thereby increasing standby time. While the
channel is not busy and no operation is performed for 10 seconds, Battery Save turns
ON. When a signal is received or an operation is performed, Battery Save turns OFF.
Factory programmed on Save On
