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Description
Citizen NHE Maritime Radio Dial Clock – Green/Red VintageOne of the most historically significant clocks in our salvage collection this genuine Citizen NHE (Nippon Hakuyo Electronics) maritime radio dial clock was designed specifically for use in ship radio rooms and wheelhouses, where it served a critical navigational and communications function. The story behind the green and red sectors Every radio room and bridge on a ship was equipped with a clock like this, its distinctive coloured sectors acting as a
One of the most historically significant clocks in our salvage collection — this genuine Citizen NHE (Nippon Hakuyo Electronics) maritime radio dial clock was designed specifically for use in ship radio rooms and wheelhouses, where it served a critical navigational and communications function.
The story behind the green and red sectors
Every radio room and bridge on a ship was equipped with a clock like this, its distinctive coloured sectors acting as a vital visual reminder of mandatory radio silence periods — a system that dates back to the earliest days of maritime Morse code communication.
The green sectors (at h+00 to h+03 and h+30 to h+33) marked the three-minute silence periods on 2182 kHz — the international maritime distress frequency — during which all stations were required to stop transmitting and listen for distress calls.
The red sectors (at h+15 to h+18 and h+45 to h+48) marked the corresponding silence periods on 500 kHz, the old Morse code distress frequency. Radio operators around the world observed these windows simultaneously, creating a global net of listening ears twice every hour.
This clock didn’t just tell the time — it helped save lives at sea.
About this clock
Originally a slave clock wired to a master timepiece aboard ship, this example has been converted to a reliable battery-powered quartz movement and is ready to hang straight on your wall. Each one is a genuine salvaged piece with the patina and character of a working life at sea.
Dimensions:
- Dial: 14cm
- Back: 22cm
- Depth: 7cm
- Weight: 1.5kg
Shipping Notes
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