Technical Specifications 22 - Entel HT644 GMDSS User Manual

Technical Specifications
GENERAL
Frequency Range
Channel Spacing
Communication Method
Antenna
Antenna Impedance
Power Supply Voltage
Battery Life
Current Drain (nominal)
Duty Cycle
Microphone
Operating Temperature
Size
Weight
156 - 163.275MHz
25 kHz
Simplex
High Efficiency Helical
50 ohm
7.4 V DC
8 Hours
Standby 40mA; RX: 390 mA; 1.0 W audio output (1kHz)
TX: 0.7 A at 1W.
TX: 10%, RX 10%, Standby: 80%, > 8Hrs
Internal condenser microphone
-20°C to 60°C
Height = 130mm (145mm including knobs);
Width = 59.5mm (62mm including protrusions);
Diameter = 37mm (41mm including battery protrusions);
Less than 300g.
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