Hytera TC-580 - Manual (Page 20)

Then the entered frequency will appear on the home
screen, and you can transmit and receive on the fre-
quency.
Basic Operations
Note:
 The entered frequency will be saved if you
turn the radio off and back on, but will not be
saved if you change channel. It will be used
for both transmitting and receiving. However,
other channel parameters such as TX power
and channel spacing will remain unchanged.
To save the frequency permanently or to cus-
tomize other channel parameters, enter the
Manual Program mode and go to “CH Set” (See
CH Set on page for more details).
 If you enter a frequency out of the frequency
band, the LCD will display “Out of Range”. If
the entered frequency is not compliant with
the rule, the radio will display a valid frequency
closest to it.
 This function may not be available in certain
countries or regions. Please contact your local
dealer for more information.
Adjusting the Power Level
Generally, we recommend you to adopt low power for
battery saving. However, if you cannot communicate
with radios located at a distant place with low power,
please select high power. Operations to change power
level:
 Press the programmed Adjust Power Level key
to switch between high and low; or
 Enter the Manual Program mode, and go to “CH
Set->Option Items->Power Level”, to select high
or low power (See Power Level on page for
more details).
The home screen shows the icon for high power, and
for low power.
Transmitting/Receiving a Call
To transmit a call, press and hold down the PTT, and
speak into the microphone. During transmitting, the LED
solidly glows red, and the icon
appears on the dis-
play.