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Cape Town's noon gun is still very definitely in operation. http://www.southafrica-travel.net/westcape/capetown_signalhill.htm Jonathan Warren
The article says "The Global Positioning System can also be used as a time reference for radio clocks, but require an accurate 1PPS output to be reliably used for time signals".
Not true. All GPS receivers by definition contain an extremely accurate clock. A few of them produce a 1 PPS output, but that's just an extra feature. There are plenty of GPS receivers that will display the current time when desired, whether they have a 1 PPS output or not.
Paul Koning 14:47, 4 June 2007 (UTC)
WOR-AM abandoned its use of hourly time signals around 2005, just a few months after its switch to HD radio and after replacing its "classic" signal with a tone similar to that used by WINS. This leaves only WINS and WCBS in that respect. –Wbwn 07:24, 22 June 2007 (UTC)
I notice that some DVD recorders are now indicating "your local PBS station" as a point from which they can automatically set their timers. I presume this is VBI data, at least for the analogue broadcast signal, and note that the article on PBS links to this article among "see also" topics. Nonetheless, this page doesn't mention PBS at all. Is this silence part of a conspiracy by Viewers Like You, that powerful but anonymous organisation that somehow controls PBS and its funding, or just an oversight? :) --carlb (talk) 02:23, 9 June 2008 (UTC)
When were the first radio time standards? For example the Pulkovo Observatory in USSR started transmitting precise time signals on shortwave in 1920. DonPMitchell (talk) 20:37, 31 May 2010 (UTC)
This section is a little confused, and might be taken as suggesting that the first use of electrical time signals was in the US in 1883. That's not true - "railway time" in the UK was an electrical signal and had been around since well before 1850 - and even looking at the US alone, I'm sure it was in use before then. This whole section could do with some research and a re-work to offer a more global perspective. I'll try to come back to it when I have more time. Mortonhall (talk) 14:23, 24 January 2015 (UTC)