[LEAPSECS] DCF77 and the inception of leap seconds
Michael.Deckers at yahoo.com
Sat Feb 2 13:32:25 EST 2019
On 2019-02-01 17:56, Steve Allen wrote:
> The PTB-controlled broadcasts were pure SI
> seconds thus making those broadcasts a form of Stepped Atomic Time
> which was approved as experimental by CCIR Rec 374-1 in 1966.
The DCF77 service started on 1959-01-01 and sent astronomically
determined signals for UT2 or UTC until 1970-04-01 when the
signals of DHI stopped. The PTB used Cs clocks since 1962,
and the PTB time signals in DCF77 used steps but never used an
offset in rate.
Andreas Bauch, Peter Hetzel, Dirk Piester: "Zeit- und
Frequenzverbreitung mit DCF77: 1959 – 2009 und darüber hinaus".
in: PTB Mitteiliungen, 2009 Heft 3. 2009-09 Braunschweig.
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