time delays on dab vs analogue

The problem with trying to get this right is that every set has a different
delay. I know that the delay on my freeview and dab are different, and
indeed a second dab I borrowed is some 2 seconds nearer the right time than
the Pure one.

I'd say that yes, it is all wrong. However, worse is to come. Sometimes when
i use my scanner, i can pick up bbc radio talkback for interviews etc, this
is quite often some three seconds ahead of the output from my fm tuner, so
the time signals on the distribution networks are hardly that accurate
either.

Just remember, if the sun goes out, you will not know for 8 minutes.

Brian

--
Brian Gaff -
Note:- In order to reduce spam, any email without 'Brian Gaff'
in the display name may be lost.
Blind user, so no pictures please!
"comp.john" wrote in message
...
Hello group,

When the time signal arrives, which is the accurate one. DAB or
analogue?

I listen to R4 before going to work in the morning.
At the top of the hour, they have the pips. I have an analogue
radio in the bedroom, another one in the bathroom, digital in
the front room (freeview), all on at the same time as I'm running round
getting ready for work.. and the time gap is very apparent.
I'd guess the digital one is 7 seconds late.

If the answer to the accuracy question is analogue, then is this
the end of an accurate time signal on BBC radio when analogue
transmission ends? When *everything* goes digital, is *everything* going
to be 7s later than the actuality?

--
comp.john

In article ,
comp.john wrote:
That's a severe change. Pips have been around as long as radio. Aren't
they meant to be accurate to within a second - I mean 7 seconds late
then why have them at all.

They're way more accurate than a second on analogue.

--
*Oh, what a tangled website we weave when first we practice *

Dave Plowman London SW
To e-mail, change noise into sound.

In article ,
Bill Wright wrote:

"Dave Plowman (News)" wrote in message
...
In article ,
comp.john wrote:
When the time signal arrives, which is the accurate one. DAB or
analogue?

Rather obviously the earliest one - as you can delay something, but not
make it happen before it does, as it were. If you could, you've just
invented time travel.

No, clever clogs, that's ********. The BBC could play the pips early so
as to make them more-or-less right for DAB. In theory . . .

And go across the end of the preceding prog? Or to avoid this you'd need a
long gap between live progs. And of course the pips are usually in between
live spots.

Not a theory you've thought through, Bill. ;-)

Bill

--
*I'm really easy to get along with once people learn to worship me

Dave Plowman London SW
To e-mail, change noise into sound.

In article ,
Dave Farrance wrote:
Google "radio controlled clock". I've an RC kitchen wall clock and two
RC alarm clocks. Very cheap:

http://www.amazon.co.uk/Cadiz-White-.../dp/B000H1QSIU

And great for next weekend. ;-)

--
*If one synchronized swimmer drowns, do the rest have to drown too?

Dave Plowman London SW
To e-mail, change noise into sound.

In article ,
Brian Gaff wrote:
I'd say that yes, it is all wrong. However, worse is to come. Sometimes
when i use my scanner, i can pick up bbc radio talkback for interviews
etc, this is quite often some three seconds ahead of the output from my
fm tuner, so the time signals on the distribution networks are hardly
that accurate either.

They certainly are on analogue R4 - as close as I can tell on a radio
controlled clock.

--
*I can see your point, but I still think you're full of ****.

Dave Plowman London SW
To e-mail, change noise into sound.

Max Demian wrote:
"comp.john" wrote in message
...
Hello group,

When the time signal arrives, which is the accurate one. DAB or
analogue?

I listen to R4 before going to work in the morning.
At the top of the hour, they have the pips. I have an analogue
radio in the bedroom, another one in the bathroom, digital in
the front room (freeview), all on at the same time as I'm running
round getting ready for work.. and the time gap is very apparent.
I'd guess the digital one is 7 seconds late.

If the answer to the accuracy question is analogue, then is this
the end of an accurate time signal on BBC radio when analogue
transmission ends? When *everything* goes digital, is *everything*
going to be 7s later than the actuality?

The number of seconds delay depends on your hardware as well as the
transmission.

I guess that when (and if) analogue radio transmissions end the BBC
will give up the GMT pips.

Most people have at least one radio controlled clock in the house.

Ah, but is that analogue radio or digital?

Brian Gaff wrote:

Just remember, if the sun goes out, you will not know for 8 minutes.

Not really true if you know your relativity theory. :-)

--
Chris Green

"Norman Wells" wrote in message
...
Max Demian wrote:
"comp.john" wrote in message
...
Hello group,

When the time signal arrives, which is the accurate one. DAB or
analogue?

I listen to R4 before going to work in the morning.
At the top of the hour, they have the pips. I have an analogue
radio in the bedroom, another one in the bathroom, digital in
the front room (freeview), all on at the same time as I'm running
round getting ready for work.. and the time gap is very apparent.
I'd guess the digital one is 7 seconds late.

If the answer to the accuracy question is analogue, then is this
the end of an accurate time signal on BBC radio when analogue
transmission ends? When *everything* goes digital, is *everything*
going to be 7s later than the actuality?

The number of seconds delay depends on your hardware as well as the
transmission.

I guess that when (and if) analogue radio transmissions end the BBC
will give up the GMT pips.

Most people have at least one radio controlled clock in the house.

Ah, but is that analogue radio or digital?

I kind of expected that smartarse remark:
http://en.wikipedia.org/wiki/Time_from_NPL#Protocol

Sounds rather digital to me, if it matters.

Does anyone know how the analogue clocks adjust when the clocks go back? Do
they buzz backwards, or just stop for an hour? Does anyone want to volunteer
to stay up this Saturday night?

--
Max Demian

--
Max Demian

In article ,
Max Demian wrote:
"Norman Wells" wrote in message
...
Max Demian wrote:
Sounds rather digital to me, if it matters.

Does anyone know how the analogue clocks adjust when the clocks go back?
Do they buzz backwards, or just stop for an hour?

most likely go forward for 11 hours.


Does anyone want to volunteer to stay up this Saturday night?

why not record the event with a camera?

--
From KT24

Using a RISC OS computer running v5.11

Max Demian wrote:
"Norman Wells" wrote in message
...
Max Demian wrote:

If the answer to the accuracy question is analogue, then is this
the end of an accurate time signal on BBC radio when analogue
transmission ends? When *everything* goes digital, is *everything*
going to be 7s later than the actuality?

The number of seconds delay depends on your hardware as well as the
transmission.

I guess that when (and if) analogue radio transmissions end the BBC
will give up the GMT pips.

Most people have at least one radio controlled clock in the house.

Ah, but is that analogue radio or digital?

I kind of expected that smartarse remark:
http://en.wikipedia.org/wiki/Time_from_NPL#Protocol

Sounds rather digital to me, if it matters.

Then it'll be late because it apparently depends on your hardware.

Does anyone know how the analogue clocks adjust when the clocks go
back?

If they're anything like the ones I have, the little knob on the back has
something to do with it.