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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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OT - Radio controlled clocks
I wonder if anyone else has noticed that some radio controlled clocks are not
keeping quite as accurate time recently. but I have two which I've noticed have been drifting apart by a few seconds over the last few days. I've just discovered the reason which is that the NPL transmitter at Anthorn, Cumbria has been shut down since 26 March for maintenance work. It's due to go back on on Friday 6 April. http://tinyurl.com/d2g4s74 I was a bit puzzled that my watch wasn't affected until I remembered that (unlike the clocks) it's dual frequency and can receive the signal from Mainflingen, Germany as well as Anthorn -- Mike Lane UK North Yorkshire mike_lane at mac dot com |
#2
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OT - Radio controlled clocks
On 03/04/2012 19:42, Mike Lane wrote:
I wonder if anyone else has noticed that some radio controlled clocks are not keeping quite as accurate time recently. but I have two which I've noticed have been drifting apart by a few seconds over the last few days. I've just discovered the reason which is that the NPL transmitter at Anthorn, Cumbria has been shut down since 26 March for maintenance work. It's due to go back on on Friday 6 April. http://tinyurl.com/d2g4s74 I was a bit puzzled that my watch wasn't affected until I remembered that (unlike the clocks) it's dual frequency and can receive the signal from Mainflingen, Germany as well as Anthorn Yes. Thanks for that. It is showing "no signal". I changed the battery in one of mine yesterday and it has not yet been able to find a signal since. The one on German DCF77 is fine. -- Regards, Martin Brown |
#3
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OT - Radio controlled clocks
On 03/04/2012 19:50, Martin Brown wrote:
On 03/04/2012 19:42, Mike Lane wrote: I wonder if anyone else has noticed that some radio controlled clocks are not keeping quite as accurate time recently. but I have two which I've noticed have been drifting apart by a few seconds over the last few days. I've just discovered the reason which is that the NPL transmitter at Anthorn, Cumbria has been shut down since 26 March for maintenance work. It's due to go back on on Friday 6 April. http://tinyurl.com/d2g4s74 I was a bit puzzled that my watch wasn't affected until I remembered that (unlike the clocks) it's dual frequency and can receive the signal from Mainflingen, Germany as well as Anthorn Yes. Thanks for that. It is showing "no signal". I changed the battery in one of mine yesterday and it has not yet been able to find a signal since. The one on German DCF77 is fine. My mains powered clock has not shown the correct time since we changed to BST. Your posts have made me find out why this is: http://www.npl.co.uk/science-technol...es/msf-outages -- Michael Chare |
#4
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OT - Radio controlled clocks
jgharston wrote
Mike Lane wrote I wonder if anyone else has noticed that some radio controlled clocks are not keeping quite as accurate time recently. I was just chatting with somebody about this a few minutes ago. They shut down on the first Tuesday of each month and the first week of April for maintenance. And the krauts dont. There might just be a message there. |
#6
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OT - Radio controlled clocks
In article , Andy
Burns writes Mike Lane wrote: I wonder if anyone else has noticed that some radio controlled clocks are not keeping quite as accurate time recently. I've just discovered the reason which is that the NPL transmitter at Anthorn, Cumbria has been shut down since 26 March for maintenance work. You'd think they'd pick the maintenance windows to be a decent period *away* from GMT/BST switch dates ... Similarly, maintenance on HMRC's VAT return submission servers appears to be carried out exclusively on the 7th of the month between 7pm and Midnight which happens to be the last 5 hours before the submission deadline for online filing sigh. -- fred it's a ba-na-na . . . . |
#7
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OT - Radio controlled clocks
In message , Andy
Burns writes Mike Lane wrote: I wonder if anyone else has noticed that some radio controlled clocks are not keeping quite as accurate time recently. I've just discovered the reason which is that the NPL transmitter at Anthorn, Cumbria has been shut down since 26 March for maintenance work. You'd think they'd pick the maintenance windows to be a decent period *away* from GMT/BST switch dates ... Like one might expect HMRC not to be doing maintenance on their website over the next two weeks (i.e. turn of the financial year) I did my EOY return on friday luckily - normal service will be resumed on the 13th! -- geoff |
#8
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OT - Radio controlled clocks
fred wrote:
Similarly, maintenance on HMRC's VAT return submission servers appears to be carried out exclusively on the 7th of the month between 7pm and Sheffield City Council's Council Tax system goes offline for the whole of March so that somebody can type in "1482.80" (GO). JGH |
#9
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OT - Radio controlled clocks
Brian Gaff wrote on Apr 3, 2012:
Don't some of them also use a german transmitter though? I can also tell you something odd about a dab clock radio. Every so often it jumps back an hour for no apparent reason. Brian Er... yes -- Mike Lane UK North Yorkshire mike_lane at mac dot com |
#10
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OT - Radio controlled clocks
"Mike Lane" wrote in message
dia.com... I wonder if anyone else has noticed that some radio controlled clocks are not keeping quite as accurate time recently. but I have two which I've noticed have been drifting apart by a few seconds over the last few days. I've just discovered the reason which is that the NPL transmitter at Anthorn, Cumbria has been shut down since 26 March for maintenance work. It's due to go back on on Friday 6 April. http://tinyurl.com/d2g4s74 I was a bit puzzled that my watch wasn't affected until I remembered that (unlike the clocks) it's dual frequency and can receive the signal from Mainflingen, Germany as well as Anthorn Anyone else got a 2000-odd Vauxhall with their crap built in clock? It syncs via RDS but each spring-forward/fall-back it won't sync. I've found that if the clock time is within about 5 minutes, it will resync but not anything more. So someone clearly decided "within 5 mins, good signal so sync, outside 5 mins bad signal so ignore" and forgot to also allow for the summer time leaps - doh. Paul DS |
#11
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OT - Radio controlled clocks
On Tue, 03 Apr 2012 21:55:45 +0100, Tim Streater wrote:
In article , PeterC wrote: On Tue, 03 Apr 2012 20:25:27 +0100, Andy Burns wrote: Mike Lane wrote: I wonder if anyone else has noticed that some radio controlled clocks are not keeping quite as accurate time recently. I've just discovered the reason which is that the NPL transmitter at Anthorn, Cumbria has been shut down since 26 March for maintenance work. You'd think they'd pick the maintenance windows to be a decent period *away* from GMT/BST switch dates ... I'm just glad that there's an explanation. There are 2 clocks in this room: 1 on Anthorn and the other on somewhere in Germany and I wasn't sure which was correct. I wonder how time servers (computer type!) are adjusted, as the UK clock and the PC clock are in sync. but ~1.5s behind Germany. From other time servers higher up the hierarchy. The top ones are synced with atomic clocks IIRC. Several years ago I used NPL but then changed ...ac.uk ones. ICR why, but possibly NPL blocked unknown IPs. -- Peter. The gods will stay away whilst religions hold sway |
#12
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OT - Radio controlled clocks
In article . com, Mike
Lane scribeth thus I wonder if anyone else has noticed that some radio controlled clocks are not keeping quite as accurate time recently. but I have two which I've noticed have been drifting apart by a few seconds over the last few days. I've just discovered the reason which is that the NPL transmitter at Anthorn, Cumbria has been shut down since 26 March for maintenance work. It's due to go back on on Friday 6 April. http://tinyurl.com/d2g4s74 I was a bit puzzled that my watch wasn't affected until I remembered that (unlike the clocks) it's dual frequency and can receive the signal from Mainflingen, Germany as well as Anthorn Yes that does seem to be shut down quite a bit these days, seems more so than when it was at Rugby... -- Tony Sayer |
#13
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OT - Radio controlled clocks
On Tuesday, April 3, 2012 11:41:56 PM UTC+1, Brian Gaff wrote:
Don't some of them also use a german transmitter though? I can also tell you something odd about a dab clock radio. Every so often it jumps back an hour for no apparent reason. Brian and the PIPs are not synchronised with those on FM. Robert |
#14
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OT - Radio controlled clocks
On Wed, 04 Apr 2012 11:36:25 +0200, Martin wrote:
I'm just glad that there's an explanation. There are 2 clocks in this room: 1 on Anthorn and the other on somewhere in Germany and I wasn't sure which was correct. I wonder how time servers (computer type!) are adjusted, as the UK clock and the PC clock are in sync. but ~1.5s behind Germany. From other time servers higher up the hierarchy. The top ones are synced with atomic clocks IIRC. Several years ago I used NPL but then changed ...ac.uk ones. ICR why, but possibly NPL blocked unknown IPs. NPL accepts foreign IPs. Perhaps I'll try again then. ATM it's on ntp2b.mcc.ac.uk and I do have ntp2.npl.co.uk still. Anyway, all 3 clocks are now in agreement and, I hope, correct. -- Peter. The gods will stay away whilst religions hold sway |
#15
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OT - Radio controlled clocks
Mike Clarke :
On Wed, 4 Apr 2012 03:34:41 -0700 (PDT) RobertL wrote: On Tuesday, April 3, 2012 11:41:56 PM UTC+1, Brian Gaff wrote: Don't some of them also use a german transmitter though? I can also tell you something odd about a dab clock radio. Every so often it jumps back an hour for no apparent reason. Brian and the PIPs are not synchronised with those on FM. Yes, the time taken to process the original analogue input and convert to digital means that digital radio and TV transmissions run a little behind the real world. More to the point the conversion back to analogue takes varying lengths of time depending on the receiver. So digital outputs aren't even synchronised with each other. -- Mike Barnes |
#16
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OT - Radio controlled clocks
Mike Clarke wrote:
On Wed, 4 Apr 2012 03:34:41 -0700 (PDT) RobertL wrote: On Tuesday, April 3, 2012 11:41:56 PM UTC+1, Brian Gaff wrote: Don't some of them also use a german transmitter though? I can also tell you something odd about a dab clock radio. Every so often it jumps back an hour for no apparent reason. Brian and the PIPs are not synchronised with those on FM. Yes, the time taken to process the original analogue input and convert to digital means that digital radio and TV transmissions run a little behind the real world. And only dinosaurs who dont care about accuracy use the radio to set their clocks anwyay. |
#17
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OT - Radio controlled clocks
In message , Rod Speed
writes Mike Clarke wrote: On Wed, 4 Apr 2012 03:34:41 -0700 (PDT) RobertL wrote: On Tuesday, April 3, 2012 11:41:56 PM UTC+1, Brian Gaff wrote: Don't some of them also use a german transmitter though? I can also tell you something odd about a dab clock radio. Every so often it jumps back an hour for no apparent reason. Brian and the PIPs are not synchronised with those on FM. Yes, the time taken to process the original analogue input and convert to digital means that digital radio and TV transmissions run a little behind the real world. And only dinosaurs who dont care about accuracy use the radio to set their clocks anwyay. So, for what do you need this incredible accuracy? -- geoff |
#18
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OT - Radio controlled clocks
geoff wrote
Rod Speed wrote Mike Clarke wrote RobertL wrote Brian Gaff wrote Don't some of them also use a german transmitter though? I can also tell you something odd about a dab clock radio. Every so often it jumps back an hour for no apparent reason. and the PIPs are not synchronised with those on FM. Yes, the time taken to process the original analogue input and convert to digital means that digital radio and TV transmissions run a little behind the real world. And only dinosaurs who dont care about accuracy use the radio to set their clocks anwyay. So, for what do you need this incredible accuracy? I dont. I do however much prefer that the system completely automatically keeps track of the time rather than fart around doing anything manually. |
#19
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OT - Radio controlled clocks
In message , Rod Speed
writes geoff wrote Rod Speed wrote Mike Clarke wrote RobertL wrote Brian Gaff wrote Don't some of them also use a german transmitter though? I can also tell you something odd about a dab clock radio. Every so often it jumps back an hour for no apparent reason. and the PIPs are not synchronised with those on FM. Yes, the time taken to process the original analogue input and convert to digital means that digital radio and TV transmissions run a little behind the real world. And only dinosaurs who dont care about accuracy use the radio to set their clocks anwyay. So, for what do you need this incredible accuracy? I dont. I do however much prefer that the system completely automatically keeps track of the time rather than fart around doing anything manually. So are you one of those "dinosaurs who dont care about accuracy" or not then -- geoff |
#20
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OT - Radio controlled clocks
geoff wrote
Rod Speed wrote geoff wrote Rod Speed wrote Mike Clarke wrote RobertL wrote Brian Gaff wrote Don't some of them also use a german transmitter though? I can also tell you something odd about a dab clock radio. Every so often it jumps back an hour for no apparent reason. and the PIPs are not synchronised with those on FM. Yes, the time taken to process the original analogue input and convert to digital means that digital radio and TV transmissions run a little behind the real world. And only dinosaurs who dont care about accuracy use the radio to set their clocks anwyay. So, for what do you need this incredible accuracy? I dont. I do however much prefer that the system completely automatically keeps track of the time rather than fart around doing anything manually. So are you one of those "dinosaurs who dont care about accuracy" I'm not one of the dinosuars who use the PIPs on the radio, stupid. |
#21
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OT - Radio controlled clocks
Mike Barnes wrote:
Mike Clarke : On Wed, 4 Apr 2012 03:34:41 -0700 (PDT) RobertL wrote: On Tuesday, April 3, 2012 11:41:56 PM UTC+1, Brian Gaff wrote: Don't some of them also use a german transmitter though? I can also tell you something odd about a dab clock radio. Every so often it jumps back an hour for no apparent reason. Brian and the PIPs are not synchronised with those on FM. Yes, the time taken to process the original analogue input and convert to digital means that digital radio and TV transmissions run a little behind the real world. More to the point the conversion back to analogue takes varying lengths of time depending on the receiver. So digital outputs aren't even synchronised with each other. If you want accurate time, not taking into account the lightspeed delay from orbit, take it from the GPS receiver in your satnav. Or use an internet time checker, which compensates for the internet delay by pinging the time server and adjusting its output accordingly. That should get you within a millisecond or two. -- Tciao for Now! John. |
#22
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OT - Radio controlled clocks
On Thu, 05 Apr 2012 07:04:38 +0100, John Williamson wrote:
Mike Barnes wrote: Mike Clarke : On Wed, 4 Apr 2012 03:34:41 -0700 (PDT) RobertL wrote: On Tuesday, April 3, 2012 11:41:56 PM UTC+1, Brian Gaff wrote: Don't some of them also use a german transmitter though? I can also tell you something odd about a dab clock radio. Every so often it jumps back an hour for no apparent reason. Brian and the PIPs are not synchronised with those on FM. Yes, the time taken to process the original analogue input and convert to digital means that digital radio and TV transmissions run a little behind the real world. More to the point the conversion back to analogue takes varying lengths of time depending on the receiver. So digital outputs aren't even synchronised with each other. If you want accurate time, not taking into account the lightspeed delay from orbit, take it from the GPS receiver in your satnav. Or use an internet time checker, which compensates for the internet delay by pinging the time server and adjusting its output accordingly. That should get you within a millisecond or two. The buses will still be up to 4 min. early or 7 min. late, regardless of the clocks. What's the point of atomic accuracy when uncertainty overrides it? -- Peter. The gods will stay away whilst religions hold sway |
#23
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OT - Radio controlled clocks
In message , Rod Speed
writes geoff wrote Rod Speed wrote geoff wrote Rod Speed wrote Mike Clarke wrote RobertL wrote Brian Gaff wrote Don't some of them also use a german transmitter though? I can also tell you something odd about a dab clock radio. Every so often it jumps back an hour for no apparent reason. and the PIPs are not synchronised with those on FM. Yes, the time taken to process the original analogue input and convert to digital means that digital radio and TV transmissions run a little behind the real world. And only dinosaurs who dont care about accuracy use the radio to set their clocks anwyay. So, for what do you need this incredible accuracy? I dont. I do however much prefer that the system completely automatically keeps track of the time rather than fart around doing anything manually. So are you one of those "dinosaurs who dont care about accuracy" I'm not one of the dinosuars who use the PIPs on the radio, stupid. Ah I forgot, you're an antipodean sun comes up, you have a wank, drink some fizzy **** and then go and sign on, drink more fizzy **** then pass out - time has little bearing on that -- geoff |
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