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Post by Deleted on Nov 5, 2017 14:48:28 GMT
Studio Clocks
A large wall clock adds the classic touch to the studio even while most timing is done by computer clocks, and our experience at KDX is that mechanical clocks have not improved very much and are cheaply made not unlike many modern radios.
In the glory days of radio networks there were huge Western Union clocks driven to 1-second accuracy by a pulse brought into the station over a dedicated telephone line, while hobbyists depended on large variety consumer clocks which typically ran from AC electricity.
The electric clocks had a "floating" accuracy dependent on power line frequency of 60 Hz which was accurate only over an average length of time. Clocks drifted 5 or 10 seconds slow, then adjusted gradually to "fairly accurate" until they topped off about 10-seconds fast before shifting again into the slower range.
Battery operated clocks timed by quartz crystal came along, but the accuracy of these has seldom been dependable, most of them gain or lose 5-minutes, 10-minutes and more, needing frequently to be reset by the owner.
Questions of wall clocks come to mind because of the overnight switch from daylight to standard time, pushing us to fiddle with clocks and their quirks.
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Post by sparepart on May 1, 2018 10:38:56 GMT
Not exactly cheap - However, very accurate and can be customized with the station logo: www.paravelsystems.com/walltime/That being said, this is actually a customized single board Linux computer. SP
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Post by Boomer on May 1, 2018 11:55:16 GMT
Maybe one day we'll all have frequency standards in our homes, controlled by GPS signals. Those standards in turn would keep clocks, on the wall and in a variety of electronic devices in lock step.
I have a clock that tunes in WWV, I believe it's the 60 khz frequency, to tell accurate time.
That might not help someone like an aunt who used to set her clocks 5 minutes ahead so she wouldn't be as late leaving for work as she thought she was.
My school had clocks that were locked to a master clock somewhere. If it was quiet in the hall, you could hear the clocks go 'tick-tack' and advance one minute at a time, all at once. In the rooms the clocks were AC powered with a sweep second hand.
Boomer
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Post by sparepart on May 2, 2018 1:33:22 GMT
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