Poul-Henning Kamp skrev:
In message <4a34df9b.4010...@rubidium.dyndns.org>, Magnus Danielson writes:
Alan Melia skrev:
Actually, this is still far from the thinking I have heard from other
sources. They essentially want everything traceable to TAI/UTC.
Make sure you ask an exact question.
Hi Alan,
Alan Melia wrote:
Hi Magnus that may be the case in some countries I suppose. Surely the
accuracy is only required at the end of the transmission link, the frames
from different sources are then resynchronised, and it is not "necessary" to
transmit nationwide accurately synced frames??
In message <4a34df9b.4010...@rubidium.dyndns.org>, Magnus Danielson writes:
>Alan Melia skrev:
>Actually, this is still far from the thinking I have heard from other
>sources. They essentially want everything traceable to TAI/UTC.
Make sure you ask an exact question.
For source material, they a
of frequency distribution
in the UK"this does not mean it might not be useful!
Alan
- Original Message -
From: "Magnus Danielson"
To: "Discussion of precise time and frequency measurement"
Sent: Sunday, June 14, 2009 12:31 PM
Subject: Re: [time-nuts] Time/f
Alan Melia skrev:
This may not relate to the USA but a couple of years back I had an
interesting chat with a BBC engineer at an NPL Time and Frequency gathering
at Teddington. His comment was along the lines of."well there is as
you realise not need to sync lines and frames nationally now
ill probably be
better than absolutely necesary.
Alan G3NYK
- Original Message -
From: "Hal Murray"
To:
Sent: Saturday, June 13, 2009 11:18 PM
Subject: [time-nuts] Time/freq from digital TV
>
> My radio has many news stories about the end of analog TV.
>
> What sort
David I. Emery skrev:
Most network broadcast distribution is via satellite, and
satellites move around in their box in the sky so any time or frequency
derived from satellite downlinked signals is subject to Doppler shifts
over the course of a day as the satellite completes its figure eig
Sent: Saturday, June 13, 2009 7:59 PM
Subject: Re: [time-nuts] Time/freq from digital TV
The digital transmitter could have a GPS based frequency reference.
I am the CE for a local station (WCIV).
We do not use any standard other than what is installed in the
transmitter.
I have not verified
On Sat, Jun 13, 2009 at 09:59:50PM -0400, Glenn Little WB4UIV wrote:
> The digital transmitter could have a GPS based frequency reference.
> I am the CE for a local station (WCIV).
> We do not use any standard other than what is installed in the transmitter.
>
> I have not verified it, but, I thin
The digital transmitter could have a GPS based frequency reference.
I am the CE for a local station (WCIV).
We do not use any standard other than what is installed in the transmitter.
I have not verified it, but, I think that the UHF transmitter
frequency is controlled by an OCXO.
I will try a
On Sat, Jun 13, 2009 at 03:18:16PM -0700, Hal Murray wrote:
>
> My radio has many news stories about the end of analog TV.
>
> What sort of time or frequency can I get from a digital TV signal?
>
> Now that frame buffers are common, does each station use its own master clock?
I don't be
My radio has many news stories about the end of analog TV.
What sort of time or frequency can I get from a digital TV signal?
Now that frame buffers are common, does each station use its own master clock?
--
These are my opinions, not necessarily my employer's. I hate spam.
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