Further Technical Specifications - Retevis RT639 Manual Del Usuario

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factors including, but not limited to: terrain,weather
conditions,electromagnetic interference,and obstructions.
2.4 Talk Confirmation Tone:
Also called as Roger Beep, which sounds to indicate the
end of a PTT transmission.
2.5 Sending a Call tone Quickly
Your radio is equipped with a call tone. To transmit a call
tone,Press the PTT button once quickly. Both the talker and
listener could hear that.

3. Further Technical Specifications:

Frequency
Operating
temperature range
Power Source
Transmission Power
Modulation Type
Channel spacing
RF ENERGY EXPOSURE AND PRODUCT SAFETY GUIDE
ATTENTION!
Channels
Range
FOR PORTABLE TWO-WAY RADIOS
Before using this radio, read this guide which
contains important operating instructions for
safe usage and RF energy awareness and
control for compliance with applicable
standards and regulations.
-30~55°C
3xAAA(Not include)
CH1:446.04375 MHz(88.5HZ CTCSS
CH2:446.09375 MHz(114.8HZ
CTCSS code)
CH3:446.19375 MHz(146.2HZ
CTCSS code)
Up to 2Km(Open field)
≤0.5Watts
12.5 KHZ
4
PMR446
code)
FM-F3E