JHS-7雙向無線電話
JHS-7是完全符合最新SOLAS有關(guān)GMDSS要求的救生筏雙向無線電話,其耐用的設(shè)計(jì)專門用于惡劣的海事環(huán)境。除了在救生時(shí)與搜救人員的雙向通話外,平時(shí)尚能用于船內(nèi)的雙向通信。
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產(chǎn)品特點(diǎn)
極端惡劣條件下8小時(shí)工作能力
可單手簡便操作
高強(qiáng)度的設(shè)計(jì)可承受從 1米掉到地面的沖擊
水密設(shè)計(jì)可適應(yīng)各種操作環(huán)境
特殊的元件和材料可耐長久日曬
專門的技術(shù)可確保超過8小時(shí)的操作時(shí)間
采用高可靠的電子元件以確保整機(jī)的高可靠性
工作穩(wěn)定
性能參數(shù)
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標(biāo)準(zhǔn)
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IMO Res.A.569(14)、A.605(15)
無線電章程附錄18和19
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一般參數(shù)
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操作信道
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CH16(156.800MHz)
CH6(156.300MHz)
CH13(156.650MHz)
CH15(156.750MHz)
CH17(156.850MHz)
CH67(156.375MHz)
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可自由選擇的信道
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從156.300到156.875頻率范圍內(nèi)可選擇7個(gè)單工信道
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信道間隔
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25KHz
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信道選擇
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觸點(diǎn)式選擇開關(guān)選擇CH16信道,其它信道使用旋轉(zhuǎn)旋鈕進(jìn)行選擇
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頻率穩(wěn)定度
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在10ppm(TX)范圍內(nèi)
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通訊模式
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單工
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發(fā)射模式
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F3E/G3E
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天線類型
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垂直全方向全封裝天線
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操作時(shí)間
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在1:9的負(fù)載周期工作時(shí)間大于8小時(shí)
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內(nèi)置電池
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7.2VDC 1000mAH
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使用環(huán)境溫度
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-20℃~+55℃
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發(fā)射單元
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有效發(fā)射功率
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0.25到1W
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調(diào)制類型
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易變的電抗器頻率調(diào)制
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頻偏
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±5KHz最大
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預(yù)加重
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6dB(+1dB、-3dB)/八度倍頻
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AF諧波失真
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優(yōu)于10%
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接收單元
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AF輸出功率
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200mW或10%THD
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去加重
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-6dB(+1dB、-3dB)/八度倍頻
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最大可用的靈敏度
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-6dBμV或低于(20dB靜音)
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選擇性
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12KHz或更優(yōu)在6dB變細(xì)
25KHz或更小在70dB變細(xì)
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頻率穩(wěn)定度
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優(yōu)于0.001%
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【GENERAL】
The JHS-7 is of heavy duty design for use maritime severe conditions and equipped with 13 single-frequency voice channels including Channel 16 (156.800 MHz), providing 0.25 to one watt of transmitted power. This equipment can be used as an on-board communication equipment.
【FEATURES】
? Thirteen Operating Channels
Thirteen single-frequency voice channels are provided including Channel 16 for calling and safety which can also be selected easily by an independent switch.
? Heavy Duty Design
The JHS-7 is designed to operate normally for 8 hours in extremely severe operating conditions.
? Single-Handed Operation
The control knobs and switches are in easy-to-operate arrangement to ensure single-handed operation.
? Mechanical Ruggedness
The JHS-7 is designed to withstand a 1-m drop onto a hard surface.
? Watertightness
The JHS-7 is designed to be waterproof to ensure its normal use even in rainy or water splash conditions.
? Sunlight resistance
If the JHS-7 is long exposed to the sunlight, it will not be damaged because it is composed of specially selected components and materials.
? Low Power Consumption
The JHS-7 is designed to minimize its power consumption and to maximize its operating time. Its sleep mode technique ensures more than 8 hours of its operation time.
? High Reliability
Highly reliable ICs, transistors, LEDs and other surface-mount devices are used.
【SPECS】
GENERAL
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Standard
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IMO Res.A.569(14), A.605(15);
Radio Regulations Appendices 18 and 19
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Operating channels
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CH 16 (156.800 MHz)
CH 6 (156.300 MHz)
CH 13 (156.650 MHz)
CH 15 (156.750 MHz)
CH 17 (156.850 MHz)
CH 67 (156.375 MHz)
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Optional channles
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Seven simplex channels selectable form a range of 156.300 to 156.875 MHz
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Channel spacing:
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25 kHz
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Channel selection
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CH 16 - by one-touch selector switch
Other CHs - by a rotary dial knob
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Local oscillator
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PLL frequency synthesizer
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Frequency stability
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Within 10 ppm (TX)
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Communication mode
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Simplex
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Class of emission
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G3E/F3E
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Type of antenna
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Vertical, omnidirectional type integrated antenna
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Operating time
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More than 8 hours at the duty cycle of 1:9
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Integrated battery
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7.2 VDC, 1000 mAH
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Operating temperature
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-20degC to +55degC
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TRANSMITTER
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Effective radiated power:
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0.25 to one watt
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Type of modulation
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Variable reactance frequency modulation
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Frequency deviation
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±5 kHz max.
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Pre-emphasis
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6dB (+1 dB, -3 dB)/octave
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AF harmonic distortion
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Better than 10%
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RECEIVER
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Receiving system
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Double superheterodyne
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AF output power
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200mW or more at 10% THD
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De-emphasis
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-6 dB (+1 dB -3 dB)/octave
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Maximum usablesensitivity
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+6 dBuV or less (20 dB noise quieting)
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Selectivity
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12kHz or more at 6dB attenuation
25kHz or less at 70dB attenuation
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Frequency Satbility
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Better than 0.001%
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Spurious response rejection
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70 dB or more
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Intermodulation response
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70 dB or more
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Blocking
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90 dBuV or more
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【STANDARD COMPONENTS】
【OPTIONS】
TWO-WAY VHF RADIOTELEPHONE
ON-BOARD COMMUNICATION EQUIPMENT
MODEL : JHS-7
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