[ntp:questions] Re: Clock accuracy & auto setting : digital television does a crap job of providing time services...
You have no need to know
anjahnoaoed at fl.net.invalid
Mon Apr 24 00:31:23 UTC 2006
Abandoning the right to remain silent, Richard B. Gilbert at Sun, 23 Apr
2006 11:11:40 -0400 said:
> You have no need to know wrote:
>> Abandoning the right to remain silent, Marc Brett at Fri, 21 Apr 2006
>> 08:40:57 +0100 said:
>>>On Thu, 20 Apr 2006 22:49:52 -0700, "Max Power"
>>><mikehack at u.washington.edu> wrote:
>>>>>i think my Sanyo HDTV switches to analog to set clock.
>>>>>ATSC time is always late ?
>>>>ATSC and DVB-T (DVB in general) are devoid of a 64 bit (or 80 bit)
>>>>clock packet (based on NTP and 'Unix Time').
>>>>For people to be forced to rely upon GNSS (Glonass, GPS, Galileo) for a
>>>>time signal is rather immoral when TV transmitters (and radio too,
>>>>remember RDS) pump out many megawatts of signal each day (globally).
>>>Immoral? That's a bit strong, innit? You don't NEED to rely on
>>>satellites for time signals. There are many LF radio time signals, such
>>>as WWV, WWVB, WWVH, CHU, MSF, DCF77, and others. CDMA cell phone towers
>>>broadcast a time signal.
>> Immoral sounds good to me. If you can point me in the direction of an LF
>> receiver that works in Australia I might reconsider.
>> Or a CDMA receiver at a price similar to one of those LF receivers that
>> everyone raves about.
> And where did the Lord assign anyone the duty to provide you with a time
> signal? The United States Government built, launched, and maintains a
> network of twenty-seven GPS satellites at no cost to the Australian
> citizen. A Garmin GPS18-LVC timing receiver will cost you less than $100
GLONASS probably does too. Not by the time you get a Garmin freighted
here, pay import duties, install an external antenna and power. It's
simpler to spend the extra and get a GPS clock http://www.gpsclock.com/
> The only "morality" involved is the questionable "morality" of believing
> that the world owes you a time signal at no cost to you.
I don't seem to recall saying the world owes me an LF receiver. I was
observing that 99% of the people who post here say how accurate and cheap
they are, when for a reasonable percentage of the earth's surface there is
> Perhaps the Japanese can help you out. I seem to recall that JJY
> broadcasts a time signal; ISTR I heard it on 5MHz when I was stationed in
As observed in another post JJY 60 kHz can be received some of the time,
but why would anyone want a solution that only works occasionally.
Avoid reality at all costs.
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