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. 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 single-frequency voice channels are provided including Channel 16 for calling and safety which can also be selected easily by an independent switch.

The JHS-7 is designed to operate normally for 8 hours in extremely severe operating conditions.

The control knobs and switches are in easy-to-operate arrangement to ensure single-handed operation.

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.

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.

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.

Highly reliable ICs, transistors, LEDs and other surface-mount devices are used.