I saw a commercial on late-night tv. it was a clock-radio thingie. it would self-set the time as soon as you plugged it in. and if the power went out, as soon as power was restored, it set the correct time again.
please explain. i figure it uses GPS, perhaps, to get the time. but then how does it know what time zone you are in? I just don’t know.
If it’s a clock-radio, I’d assume it’d set itself based on an signal sent through the radio signal. However I’ve never heard of it before on a clock radio.
I do know that there exists TVs and VCRs that set the time automatically based on a signal sent through the data band of broadcast TV (that band that also sends closed-captioning info)…
I wonder if it’s one of the RDS radio things.
These pick up information from local stations such as time.
It could be like my cheap bedside clock - it contains a nine volt battery to ensure that the time is not lost during a mains power outage. When mains power is restored, the correct time magically appears…:rolleyes:
My dad has a clock like this, I believe it receives a radio signal from WWV (the shortwave time station out in Colorado) to set the time. I think he had to input what time zone he’s in, though I suppose one could be made that relied on GPS to figure that out.