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by _joel
1040 days ago
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Time over radio has been a thing since 1927! "A radio station at Rugby was first operated by the Post Office from 1926, with the call-sign GBR. From 19 December 1927, it broadcast a 15.8 kHz time signal from the Royal Observatory which could be received worldwide. It consisted of 306 pulses in the five minutes up to and including 10:00 and 18:00 GMT, with a longer pulse at the start of each minute. " https://en.wikipedia.org/wiki/Time_from_NPL_(MSF) |
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