A Centena Group Company



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.
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.
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.
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
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  
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