- VHF radio and UHF onboard communications
- VHF Radio Telephone
The JHS-7 is a hand-held portable VHF radiotelephone for on-scene, life-saving two-way communication between survival craft, between survival craft and ship, and between ship and rescue boat in accordance with SOLAS convention.
Outline
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.
Specifications / Components
SPECIFICATIONS
| GENERAL | Standard | IMO Res.A.569(14), A.605(15); Radio Regulations Appendices 18 and 19 |
|---|---|---|
| Operating channels | 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) |
|
| Optional channles | Seven simplex channels selectable form a range of 156.300 to 156.875 MHz | |
| Channel spacing: | 25 kHz | |
| Channel selection | CH 16 - by one-touch selector switch Other CHs - by a rotary dial knob |
|
| Local oscillator | PLL frequency synthesizer | |
| Frequency stability | Within 10 ppm (TX) | |
| Communication mode | Simplex | |
| Class of emission | G3E/F3E | |
| Type of antenna | Vertical, omnidirectional type integrated antenna | |
| Operating time | More than 8 hours at the duty cycle of 1:9 | |
| Integrated battery | Ni-Cd battery7.2VDC, 1000mAH NiMH Battery |
|
| Operating temperature | -20degC to +55degC | |
| TRANSMITTER | Effective radiated power: | 0.25 to one watt |
| Type of modulation | Variable reactance frequency modulation | |
| Frequency deviation | ±5 kHz max. | |
| Pre-emphasis | 6dB (+1 dB, -3 dB)/octave | |
| AF harmonic distortion | Better than 10% | |
| RECEIVER | Receiving system | Double superheterodyne |
| AF output power | 200mW or more at 10% THD | |
| De-emphasis | -6 dB (+1 dB -3 dB)/octave | |
| Maximum usable sensitivity | +6 dBuV or less (20 dB noise quieting) | |
| Selectivity | 12kHz or more at 6dB attenuation 25kHz or less at 70dB attenuation |
|
| Frequency Satbility | Better than 0.001% | |
| Spurious response rejection | 70 dB or more | |
| Intermodulation response | 70 dB or more | |
| Blocking | 90 dBuV or more |
STANDARD COMPONENTS
| Item | Model | Q'ty | Remarks |
|---|---|---|---|
| Radiotelephone | JHS-7 | 1 | Incl. Antenna and battery |
| Battery Pack | NBB-389 | 1 | |
| Carrying Strap | MPX02384 | 1 | |
| Test Data | 1 | ||
| Instruction Manual | 1 |
OPTIONS
| Item | Model |
|---|---|
| Battery Charger | NBA-4141 |
| Battery Pack | NBB-248A |
| Earphone | 6UMJD00004 |
| External Speaker/Microphone | 6UMJD00029 |
| Carrying case | MPX02368 |
| Ledge for three Battery chargers (Horizontal type) | NZB-90 |
| Ledge for four Battery chargers (Horizontal type) | NZB-91 |
| Ledge for five Battery chargers (Horizontal type) | NZB-92 |
| Ledge for three Battery chargers (Vertical type) | NZB-93 |
| Ledge for four Battery chargers (Vertical type) | NZB-94 |
| Ledge for five Battery chargers (Vertical type) | NZB-95 |
Dimension
Product Inquiry
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VHF radio and UHF onboard communications
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