PRODUCT

HT Series

— 对讲机

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HT644
HT644 VHF Marine INT/USA/CAN,HT便携式对讲机,特别设计,能很好的承受日常严酷条件下的海上工作环境。
产品介绍

General

Frequency Range156 - 163.275MHz
ChannelsAll INT, USA & CAN Marine Channels
Channel Spacing25 kHz
Communication MethodSimplex / semi duplex
Antenna Impedance50 ohm
AntennaWhip / stubby
Battery Type2200 mAh Lithium-ion battery pack
Operating Voltage7.6V
Current Drain (nominal)40mA
Duty Cycle (5/5/90)14.5 hours
MicrophoneInternal condenser microphone
Operating Temperature-20° to +55°C
ConstructionCompliant MIL-STD 810C/D/E/F/G
IP RatingIP68 (2 meters depth for 4 hours)
Size (mm)59.5(W) x 130(H) x 37(D)
Weight277g with battery and aerial

Transmitter

Power Output5W High <1W Low
Frequency Stability± 1.5ppm
Modulation Limiting± 5.0KHz
FM Hum & Noise>-40dB
Unwanted Emissions<2nW up to 1GHz, <20nW from 1GHz to 2GHz
Adjacent Channel Power70dBc
Audio Response (FM)300Hz to 3KHz -6dB/Octave
Audio Distortion< 5%
FM Modulation16K0F3E

Receiver

Frequency Stability± 0.5ppm
Analogue Sensitivity-120dBm (0.2uV) for 12dB Sinad
Intermodulation Response>68dB
Adjacent Channel Selectivity>70dB
Spurious Rejection>70dB
Rated Audio Power0.5W
Audio Distortion< 5%
Hum & Noise>-40dB
Audio Response300Hz to 3KHz -6dB/Octave
Conducted Spurious Emissions<2nW up to 1GHz, <20nW from 1GHz to 2GHz
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