As a consequence, radio room clock designs were updated to incorporate the new silence periods. At the same time, two additional hourly radio silence periods were introduced: 0-3 minutes and 30-33 minutes. It was more suitable for distress signals thanks to its significantly increased communication range. Starting from 1947, an additional distress frequency of 2182 KHz was designated. The early radio room clocks, therefore, featured only two colored segments on the dials, like the Chelsea clock shown in the picture. In order to mitigate congestion issues, it was decided to ban all non-distress communications every hour, during two periods of three minutes each: 15-18 minutes and 45-48 minutes. Titanic sinks: The Boston Daily Globe headlineĮarly radio room clock with two radio silence periodsAfter the 1912 disaster, the 500 KHz frequency was definitely established as the one to be used for seagoing communications. With growing sea traffic, this frequency often became congested which may have played a role in the sinking of Titanic. In the beginning of the 20th century, the 500 KHz radio frequency was designated as one of the standard communication frequencies for vessels and shore stations. This design replicates ship radio room clocks and the colored segments are used in maritime distress call monitoring.
What’s the meaning behind this strange dial design? As you can see, there are four periods of 3 minutes each highlighted on the dial: two periods in pink (0-3 minutes and 30-33 minutes) and two periods in red (15-18 minutes and 45-48 minutes). Limited Radio Room Editions from Meranom.White Radio Room Watchuseek & Orologiando Limited Edition.Different Versions of the Vostok Radio Room.
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