Re: [time-nuts] 90ms delay of time signal on phase-modulated carrier of BBC 198KHz transmission in the UK (was: DST change on DCF77)

2019-11-21 Thread Peter Vince
Hi Steve, On Thu, 21 Nov 2019 at 01:00, Steve Allen wrote: > > The current version ITU-R TF.460-6 says that time signals should > not deviate by more than 1 ms from UTC. > > How can these broadcasts justify such a large offset? The signal is only used (as far as I am aware, a few Time Nuts

Re: [time-nuts] 90ms delay of time signal on phase-modulated carrier of BBC 198KHz transmission in the UK (was: DST change on DCF77)

2019-11-21 Thread Alan Melia via time-nuts
It can be justified very simply that the phase mod data on 198kHz is NOT intended as a standard time distribution. As far as I am aware only the frequency accuracy is covered in the NPL contract. Even that no longer seems to be monitored and offsets published. Time distribution is on MSF

Re: [time-nuts] 90ms delay of time signal on phase-modulated carrier of BBC 198KHz transmission in the UK (was: DST change on DCF77)

2019-11-20 Thread Steve Allen
On Wed 2019-11-20T11:35:51+ Peter Vince hath writ: > As I mentioned in a previous message about observed anomalies with the DST > change on DCF77, Pieter-Tjerk in the Netherlands noted that the time > encoded on the phase-modulated carrier of the BBC's 198KHz signal in the UK > was about 900