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#2 |
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Banned User
Join Date: Mar 2004
Posts: 870
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Expect that with the compression delay in digital media, and also with satelite delay, the pips aren't really as accurate as they are supposed to be. I suppose the BBC carry the pips mainly for historic reasons. With RDS and stuff, maybe the pips are now less necessary. It's nice to hear them though.
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#3 | |
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Forum Member
Join Date: Jun 2003
Posts: 807
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Quote:
sausages |
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#4 | |
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Forum Member
Join Date: Dec 2001
Location: West London
Services: Sky+; ADSL; Apples'n'iPears
Posts: 13,256
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Quote:
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#5 | |
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Forum Member
Join Date: Apr 2003
Location: Surrey by the sea!
Posts: 302
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Quote:
These day's you'll probably find most ILRs are better at time keeping with there news than the BBC is. BBC radio 2 Is hopeless at actually having the news at the right time, where a lot of comercial stations share news services, (especaiily out of hours) they have to opt in at the correct time, no option of having the news at 1 min past the hour. |
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#6 |
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Forum Member
Join Date: May 2003
Location: Shropshire - (Tx: The Wrekin)
Services: Sky+, Sky Broadband Connect, Sky Talk. OS: XP Pro, Vista Home Premium
Posts: 9,936
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BBC Radio 3 scrapped the pips, don't know why, local commercial stations may not want to have the pips.
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#7 | |
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Forum Member
Join Date: Oct 2001
Location: North West UK
Services: are those places on the motorway where petrol costs loads more than anywhere else
Posts: 1,431
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Quote:
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#8 |
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Forum Member
Join Date: Jul 2003
Location: North Fife Scotland
Services: Thomson PVR 2 Digifusions and an On Digital Pioneer still going
Posts: 148
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What about satsumas?
No Pips
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#9 |
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Forum Member
Join Date: Mar 2003
Location: Highlands & Islands of Angus!
Services: Digihome PVR, LG DTV
Posts: 980
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The stations can't afford the royalties they have to pay to Gladys Knight.
![]() PS If you want to know the exact time get a radio-controlled clock. And here's an idea, someone should manufacture a radio with a self-generated pips option. |
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#10 |
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Forum Member
Join Date: Apr 2004
Location: Kent
Posts: 361
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all this talk about pips is giving me the.........
pip
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#11 | |
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Forum Member
Join Date: Jan 2002
Location: South East England
Services: FTA: 28.2, 19.2, 13, London DTT, TV->PC capture, 2Mb fibre. London/S&C DAB
Posts: 3,887
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Quote:
Toodle.. |
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#12 | ||
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Forum Member
Join Date: Jul 2002
Location: Suffolk
Services: SkyHD, Tacolneston DTT, lousy DAB, slow broadband
Posts: 833
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Quote:
As for accuracy - I don't think that GTS (as was) was ever that accurate via the BBC. The signal was derived from an atomic clock at the Royal Greenwich Observatory's site near Hastings, and sent to BH over the old BT carrier network (copper pairs). Prorogation used to vary with the temperature of the wires. At one stage there will even have been thermionic repeaters! Now the source into the BBC may be more accurate, all that processing in the transmission chain will take its toll on the timing. When on 200khz the Droitwich transmitter was regarded as a standard frequency transmission as far as the (NPL/ BT Rugby) derived carrier were concerned, but the time signals broadcast by it were not recognised in any way. Quote:
Rgds |
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#13 |
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Forum Member
Join Date: Apr 2003
Location: Cents, Lėtzebuerg
Services: DVB-s, DVB-t, P&T LuxDSL
Posts: 7,140
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Tune into WWV, standard time and frequency station, Fort Collins, CO, on the frequencies of 5, 10, 15, and 20 MHz and you will be able to hear the "pips" or rather tones for each second, 24 hours a day (reception conditions permitting).
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#14 | |
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Forum Member
Join Date: Jul 2002
Location: Suffolk
Services: SkyHD, Tacolneston DTT, lousy DAB, slow broadband
Posts: 833
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Quote:
This is a good page : - http://www.cl.cam.ac.uk/~mgk25/lf-clocks.html The NPL keep the UK legal physical standards for most aspects of measurement, including time. Their atomic clocks, located at NPL Teddington and at BT Rugby are the nation's official timekeepers, and form the UK's contribution to the average of official atomic time resources around the globe :- http://www.bipm.org/en/scientific/tai/time_server.html The UK used to have 2 official contributors to UTC, the NLP and the Royal Greenwhich Observatory (RGO). The RGO used to keep and disseminate astronomical time, measuring the motion of the earth relative to astronomical observation. In order to calibrate this they required the most accurate form of time measurement available, which is of course, and atomic clock. Hence the RGO also kept atomic time, corrected to Universal Coordinated Time (UTC). It was this that was the source of the BBC's "pips", then known as the Greenwich Time Signal (GTS), rather than the "legal" NPL time. When the RGO ceased to be a timekeeper the BBC had to make other arrangements. The time signal is based on NPL time, but the BBC do use some form of local clock rather than just keying a tone based on reception of the 60khz pulses from BT Rugby. Originally (1990) this could have been the BBC's own rubidium standard, although they've probably got a caesium clock of their own by now. Having read the posts in this thread had set me wondering. Was the 1990s the peak of accuracy in publicly disseminated time in the UK? Consider this, based on the assumption that the purpose would be to manually set a clock or watch :- Time distribution Speeking Clock/TIM Still going strong, more accurate than the days of the carrier network. Sponsorship rather crass though. British Rail IT systems used to display time are less accurate at point of display than the electro-mechanical systems introduced by BR in the late 1980s. Slaved in MSF 60khz these gave a welcome auidiable click on the second marker. BBC/GTS Broadcast radio time-signals are now less accurate due to audio processing, and compressed digital distribution systems. The BBC engineers are fully aware, and would love to engineer a remedy if the opportunity arose. Teletet/Ceefax Mch more accurate in the 90s than when the service started. The original ITV Oracle clock was said to be slaved off the mains, so only "nominally" accurate at 0800! The drift to DTT will remove this source of time. VCR display Now very accurate due to PDC VITS derived time. Ditto comments above, on its way out. TV on screen clock All gone due to fashion, and the onset of MPEG processing delay Ask a policeman If too many people wanted to ask a "British bobby" the time, the Police Authorities would probably want to start charging for the service. Rgds/ |
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#15 |
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Forum Member
Join Date: Jul 2002
Location: Egham, Surrey
Posts: 7,441
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Is Freeview a couple seconds late like Sky Digital is compared to analogue?
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#16 |
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Forum Member
Join Date: May 2003
Posts: 3,068
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Yes. Apart from channel 4, which I believe delays its analogue broadcasts by a couple of seconds in order for Digital and Analogue to by syncronised
jack |
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#17 |
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Forum Member
Join Date: May 2003
Location: Wolverhampton
Services: Virgin Media (ex-Telewest) Broadband Size L/TV Size XL & V+ Box / Freesat
Posts: 1,463
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#18 |
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Forum Member
Join Date: Jun 2003
Location: UK
Posts: 321
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They should use the bells, much better.
If you want to know the time buy a watch. More practical advice next time. |
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#19 |
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Forum Member
Join Date: Feb 2004
Location: Chorley ,Lancs.
Services: bt yahoo
Posts: 273
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I like the sound of the pips before the news and as for time keeping its useful to even if it not right to the second its close for what i need
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#20 | |
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Forum Member
Join Date: Jun 2002
Location: SW Londinium
Services: Crappy digital tv, Pipex 1Mbit ADSL, FM Radio
Posts: 6,360
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Quote:
Is the rest of Radio 2 really that bad? |
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#21 | |
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Forum Member
Join Date: Apr 2003
Location: Surrey by the sea!
Posts: 302
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Quote:
A few years ago the Hospital Radio Station I work for used to take radio 2 as the sustaining service. we used to opt in with the news at 10. it was hopeless trying to do cleanly, the news could be anytime from 1 min to the hour, to 2 mins after! Another one which is still a problem, is pick of the pops quite often the news is 1 min after 3! it's easyer with a recorded programme to make sure that it's recorded to the correct length!! agh thankfully now we've gone to 24 hour broadcasting and get our news from IRN so we have to be spot on with our timing, or we'll miss it! I have'nt got my radio controlled watch with me today, otherwise I would have done a quick test to see how the news during the day pans out. maybe a job for monday! |
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#22 | |
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Forum Member
Join Date: Apr 2004
Location: Leicester
Services: Sky+HD; Sky broadband 20Mb; Sky Talk; the sky; Nokia 5800 on Orange; a cat
Posts: 447
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Quote:
Dan |
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#23 | |
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Forum Member
Join Date: Jun 2003
Location: UK
Posts: 321
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Quote:
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#24 | |
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Forum Member
Join Date: Apr 2003
Location: Cents, Lėtzebuerg
Services: DVB-s, DVB-t, P&T LuxDSL
Posts: 7,140
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Quote:
Furthermore, I was led to believe that the signal on MSF is not actually a modulated tone, so even if you receive it, you cannot hear it. Or is my understanding in error? The advantage of WWV is that it is broadcasts on frequencies that can be received by many radios, and that there is a voice announcement each minute, so that one actually knows which minute is being marked. Furthermore, at certain times of the day there are announcements about solar weather and propagation conditions. <http://www.boulder.nist.GOV/timefreq/stations/wwv.html> |
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#25 |
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Forum Member
Join Date: Aug 2002
Location: Norwich, Tacolneston tx
Services: Namesco Broadband, Freeview, FTA DSat, DAB.
Posts: 12,687
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Does anyone remember when Tony Blackburn used to do the Radio 1 breakfast show and they took the 8 o'clock pips (no news on the hour) and wherever he was in a record he just faded it down and said 'Radio 1 time is now 8 o'clock' - then the pips came in, and he faded the record back up afterwards- no attempt at back-timing whatsoever!
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