1
1. GENERAL
1.1 General
This equipment is designed and manufactured for
two-way communication between survival crafts,
between survival craft and main ship, and between
main ship and a rescue boat in accordance with the
Safety of Life at Sea convention (SOLAS).
This is 150MHz/1W portable radiotelephone which
is capable of installing 13(thirteen) operating
channels for international marine mobile service,
also can be used as on-board communication
equipment.
1.2 Features
(1) Watertightness
This radio telephone is of the watertight structure
to a depth of one meter.
(2) Thirteen operating channels
13(Thirteen) single-frequency voice channels are
provided including channel 16 for safety which
can also be selected easily by an independent
switch.
How ever, usable channels of the JHS-7 for JG
Flag are restricted to CH15, CH16, and CH17.
(3) Easy handling
Controls and switches are designed and located
for easy operation, and can be manipulated even
when thick gloves are worn.
(4) Small size and light weight
This radio telephone is designed in compact with
dimensions of 64mm(width)×165mm(height)×
45.5mm(depth), and weight approximately 600g,
including Battery Pack. And its shape is designed
to facilitate carrying by hand for a long period of
time. Moreover, carrying strap and a belt clip
come with it for easy carrying.
(5) Low power consumption
Since its power consumption is extremely low,
this radio telephone can operate for a long time
(more than 8 hours with transmission reception
and stand-by in the ratio of 1 to1 to 8) once the
battery is charged.
(6) Frequency synthesizer
The use of a frequency synthesizer assures high
frequency stability for all the channels.
(7) Display of transmitting condition
The Tx lamp indicates whether transmitting
output is on or off.
During press-to-talk operation, the Tx lamp lights
up by monitoring carrier level to indicate that
signals are being transmitted.
(8) Charge lamp
When the battery energy is almost consumed, the
BUSY lamp blinks for indicating necessity of the
battery charging.
(9) High reliability
Surface-mounting type ICs, transistors, resistors,
and capacitors, which are suitable for automatic
mounting, assure homogeneous quality and high
stability.
(10) Removable battery pack
The battery pack can be easily replaced because
of its easy removal from the radiotelephone. The
battery pack mounting assembly is protected so
that battery pack can be replaced even under a
rain fall.
Quick charging (within three hours) can be done
by inserting the battery pack into the optional
battery charger NBA-4141/NBA-4141A.
(11) Carrying strap
The strap includes the weak links to prevent the
bearer from being ensnared. It means that, for
example, while grasping the strap if dropped the
radiotelephone, the weak links keep linking, but
if hanging by neck accidentally, the weak links
are unlinked for safety.
Static weight limit: 63.7
～
117.6 N (6.5
～
12.0 kgf)
1.3 Composition
1.3.1 Standard Components
Item Model Qty Remarks
Radiotelephone JHS-7 1 Inc. antenna
Primary battery NBB-389 1
For emergency only
Secondary battery NBB-248/248A 1 For daily use
Carrying strap MPXP33444 1
Instruction manual
1
Test data 1
1.3.2 Option
Item Model Remarks
Battery charger NBA-4141
/NBA4141A
Primary battery NBB-389 For emergency only
Secondary battery NBB-248/248A For daily use
Ear phone 6UMJD00004
External SP/MIC 6UMJD00029
Carrying case MPXP02368
1.3.3 Optional channel programming
According to custom order, your JHS-7 with upto 7
optional channels will be shipped from JRC factory.
Please designate required channel Nos from simplex
voice channels specified in Appendix 18 of the Radio
Regulation.
Note: The JHS-7 for JG Flag is equipped with no
optional channel.
