Licence-free bands:
The
Frequency
column refers to the frequencies that can be selected on the radio. The 8
frequencies in the 446MHz band are represented by the 8 channel numbers, 1-8, in the table. These
channels correspond to the channels on other 446MHz license free radios. The 5 frequencies in the
464MHz band are represented by the 5 channel numbers, 1a - 5a, in the second table. These
channels correspond to the channels on other 464MHz license free radios.
Sub-tones:
The
Tone
column shows the sub tone assigned for each frequency. There are 50 QT (CTCSS quiet
tones) and 210 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 & 464MHz radios such as the Zartek Pro8 or
Pro5. 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.
Optional Features:
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). While the channel is not busy and no operation is performed for 12 seconds, Battery Save
turns ON. When a signal is received or an operation is performed, Battery Save turns OFF.
Factory programmed on Save On