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The pseudo-code generates "00001..." (4 zeros), but the text before it says that the sequence is "000001..." (5 zeros).
Correctly observed. I also fell over this. And the specified sequence is correct. The actual (hardware) description of the prbs generator can be found in ref.4(Hetzel). There it can be seen that the lfsr contains an 'all-zero' exception (as is so often done), but also that it is initialized/started to 'all-zero'. I changed the pseudo-code according to this, to have the pseudo-code to correspond with the sequence.
Noudio — Preceding unsigned comment added by Noudio ( talk • contribs) 20:00, 20 December 2010 (UTC)
The carrier power is reduced to 15% to form the second marks.
See "PTB Mitteilungen" Volume 119 (2009) No. 3,
"Time and Frequency Dissemination with DCF77: From 1959 to 2009 and Beyond",
Bauch, Hetzel and Piester, section 5.2:
http://www.ptb.de/cms/fileadmin/internet/fachabteilungen/abteilung_4/4.4_zeit_und_frequenz/pdf/PTBM_50a_DCF77_engl.pdf
Dulciana (
talk)
21:28, 14 January 2011 (UTC)
The figure "Amplitude modulated signal of DCF77 as a function of time" is obsolete: it depicts a signal keyed to a residual amplitude of about 25%. (See note on 15% above.) Also its name ("DCF77_Impulse") is a bit ambiguous because it is not an impulse. — Marosi Gyula ( talk) 08:59, 30 October 2012 (UTC)
The figure "Amplitude modulated signal of DCF77 as a function of time" does not show the interval of 1s which starts at the beginning of amplitude reduction and ends at the next one. The download file is correct ! — Preceding unsigned comment added by 81.65.144.17 ( talk) 10:08, 1 December 2023 (UTC)
A sound of the signal in an AM receiver capable of receiving its frequency
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It seems that the morse code is still transmitted but will be discontinued http://www.ptb.de/cms/en/fachabteilungen/abt4/fb-44/ag-442/dissemination-of-legal-time/dcf77/dcf77-identification-of-stations.html — Preceding unsigned comment added by Braice ( talk • contribs) 13:38, 26 May 2012 (UTC)
> For a DCF77 receiver located 1,000 km (621 mi) away from the DCF77 transmitter, due to transit delay the receiver will be set more than 3 milliseconds late.
I think this sentence from the article is incorrect, at least according to the rigorous interpretation of Albert Einstein's General Relativity. The receiver located 100km afar will not be 3 milliseconds late, it will be spot on when the DCF-77 signal arrives, because the speed of light / electromagnetic waves is the universal reference of spacetime. Nothing can go faster than light, thus one cannot prove experimentally that the receiver is late? 62.77.213.125 ( talk) 14:45, 23 March 2014 (UTC)
How far does the time signal get transmitted? Is it possible to use a radio-controlled clock in say, Spain or Turkey? -- Alexey Topol ( talk) 00:05, 12 November 2015 (UTC)
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