Worldwide radio clock signals?
Z
signals for clocks. This is for home and office wall, alarm and desk
clocks not computer clocks.
I am in particular looking for Israel standard time.
Would a clock which sets itself to the British Rugby MSF signal
synchronise in Israel?
Would I get IRIG (eg IRIG-B) signals in Israel?
Are there any alarm clocks and wall clocks on the market which
synchronise to IRIG? Even if Zulu time and settable offset.
Would I have to use a GPS clock?
Are there any alarm clocks and wall clocks on the market which
synchronise to the NMEA string off GPS? Even if Zulu time and settable
offset.
Is there anything which would synchronise in UK, Europe and Israel?
--
Z
Remove all Zeds in e-mail address to reply.
John Rowland
news:atgOWjp8...@imaris.demon.co.uk...
> I am looking for a website or other source of
> information for radio signals for clocks.
> This is for home and office wall, alarm and desk
> clocks not computer clocks.
> I am in particular looking for Israel standard time.
> Would a clock which sets itself to the British
> Rugby MSF signal synchronise in Israel?
Highly unlikely. A clock which synchronised to the DCF transmitter in
Mainflingen, near Frankfurt (Am-Main), Germany, would be more likely to work
in Israel, and would also work in most or all of the Jewish areas of
Britain. It would not change itself when Israel changes to or from Summer
Time, but would change itself when Germany changes to and from Summer Time.
(Germany and Britain always change their clocks on the same day and at the
same instant.)
> Would I have to use a GPS clock?
Do such things exist?
--
John Rowland - Spamtrapped
Transport Plans for the London Area, updated 2001
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Paul Cooper
<jo...@journeyflow.spamspam.demon.co.uk> wrote:
>"Z" <po...@imaris.demon.co.uk> wrote in message
>news:atgOWjp8...@imaris.demon.co.uk...
>> I am looking for a website or other source of
>> information for radio signals for clocks.
>> This is for home and office wall, alarm and desk
>> clocks not computer clocks.
>> I am in particular looking for Israel standard time.
>> Would a clock which sets itself to the British
>> Rugby MSF signal synchronise in Israel?
>
>Highly unlikely. A clock which synchronised to the DCF transmitter in
>Mainflingen, near Frankfurt (Am-Main), Germany, would be more likely to work
>in Israel, and would also work in most or all of the Jewish areas of
>Britain. It would not change itself when Israel changes to or from Summer
>Time, but would change itself when Germany changes to and from Summer Time.
>(Germany and Britain always change their clocks on the same day and at the
>same instant.)
>
>> Would I have to use a GPS clock?
>
>Do such things exist?
Yes, but are specialist kit - used for getting time signals for
computer networks, for example.http://www.gpsclock.com/specs.html.
Paul
michael turner
> "Z" <po...@imaris.demon.co.uk> wrote in message
> news:atgOWjp8...@imaris.demon.co.uk...
>> I am looking for a website or other source of
>> information for radio signals for clocks.
>> This is for home and office wall, alarm and desk
>> clocks not computer clocks.
>> I am in particular looking for Israel standard time.
>> Would a clock which sets itself to the British
>> Rugby MSF signal synchronise in Israel?
>
> Highly unlikely. A clock which synchronised to the DCF transmitter in
> Mainflingen, near Frankfurt (Am-Main), Germany, would be more likely to work
> in Israel, and would also work in most or all of the Jewish areas of
> Britain. It would not change itself when Israel changes to or from Summer
> Time, but would change itself when Germany changes to and from Summer Time.
> (Germany and Britain always change their clocks on the same day and at the
> same instant.)
>
>> Would I have to use a GPS clock?
>
> Do such things exist?
You can get a GPS watch.
http://www.web-watches-casio.com/gps/
--
Michael Turner
Email (ROT13)
zvxr.gh...@ivetva.arg
Z
<jo...@journeyflow.spamspam.demon.co.uk> writes
>"Z" <po...@imaris.demon.co.uk> wrote in message
>news:atgOWjp8...@imaris.demon.co.uk...
>> I am looking for a website or other source of
>> information for radio signals for clocks.
>> This is for home and office wall, alarm and desk
>> clocks not computer clocks.
>> I am in particular looking for Israel standard time.
>> Would a clock which sets itself to the British
>> Rugby MSF signal synchronise in Israel?
>
>Highly unlikely. A clock which synchronised to the DCF transmitter in
>Mainflingen, near Frankfurt (Am-Main), Germany, would be more likely to work
>in Israel, and would also work in most or all of the Jewish areas of
>Britain. It would not change itself when Israel changes to or from Summer
>Time, but would change itself when Germany changes to and from Summer Time.
>(Germany and Britain always change their clocks on the same day and at the
>same instant.)
>
>> Would I have to use a GPS clock?
>
>Do such things exist?
>
overkill for my requirements as I'm just looking for a domestic wall
clock.
If there is an hour or two offset it is not a major problem. I scutter
about in the morning too much and my clocks are a different times and
I'm inevitably late for work.
Normand Martel
In Canada: CHU 3.33 MHz
7.335 MHz
14.67 MHz
Transmitter site: Ottawa, ON
In U.S.A.: WWVB 60 kHz (VLF)
WWV/WWVH 2.5 MHz
WWV/WWVH 5.0 MHz
WWV/WWVH 10.0 MHz
WWV/WWVH 15.0 MHz
WWV 20.0 MHz
WWV/WWVB transmit from Boulder, CO and WWVH transmits from Hawaii.
Russia (former USSR) have pulsed signals at 4.996, 5.004, 9.996,
10.004, 14.996 and 15.004 MHz
MANY other countries have frequency standards/radio clocks on 5, 10,
15 and 20 MHz.
Also, at 100.0000 kHz, the LORAN-C is a reliable frequency standard,
but there is no temporal signals.
I also know that there are many frequency/time standards in Europe,
including VLF signals working in fashion similar (but not compatible)
to WWVB, and that in France, since decades, there's a longwave (GO)
radio station that features an atomic accurate carrier frequency and
phase modulated clock signals.
There are also mostly all digital cellular phone radio sites that
include Rubidium and GPS slaved clocks, but special receivers are
needed to synchronize on these signals. At the best of my knowlegdge,
no temporal signals are included in those transmissions.
And finally, the standard i use personally: IRIG-B from the GPS
satellites, available everywhere around the planet, and with receiver
boards available for less than 100$ (US) on eBay. The mais reason why
i adopted this signal, is that most of the receiver boards available
on eBay have a 1 PPS (Pulse Per Second) output that is exactly
synchronous to the NIST atomic clocks, within a few hundred
nanoseconds! Having a frequency standard at home have never been so
easy!
Have a look at this URL:
http://www.rt66.com/~shera/QST_GPS.pdf
Normand Martel
Z <po...@imaris.demon.co.uk> wrote in message news:<ENpXTBaT...@imaris.demon.co.uk>...
Jack Denver
900 mhz band) broadcasts a time signal, which the Timex "internet messenger"
watches pick up. Since the signals are locally repeated the watch
automatically guesses your approximate location based on what tower it is
receiving from and sets itself to the local time zone without intervention
as you travel. For example, here in Phila., my watch thinks it is in the
"NYC" zone. You can override the setting if you are in a border area and the
watch guesses wrong.
There is also a time signal embedded in the vertical blanking interval of US
TV broadcasts, typically the PBS station in each market (same area that
close captions are broadcast in). I have a VCR that sets itself based on
this signal, so it never blinks 12:00. Again, it is the local time so the
user does not have to input a GMT offset.
"Normand Martel" <ve...@amsat.org> wrote in message
news:f161de6b.04052...@posting.google.com...
Eric Jorgensen
"Jack Denver" <nunu...@netscape.net> wrote:
> There is also a time signal embedded in the vertical blanking interval
> of US TV broadcasts, typically the PBS station in each market (same
> area that close captions are broadcast in). I have a VCR that sets
> itself based on this signal, so it never blinks 12:00. Again, it is
> the local time so the user does not have to input a GMT offset.
In my market, this time signal is there, but wrong. I've heard of it
being completely wrong. One of those low priority things. It's not what
you'd call atomic accuracy.
Paul Cooper
It's probably OK in broadcast signals, but may be wrong in Cable
signals where the same signal that is broadcast is sent on cable to
places out of the time-zone of the originator. However, It is hardly
likely to be a high precision source.
You can either use NTP services in conjunction with the network time
services in Windows 2000 or XP to ensure your PC clock is dead on (see
http://homepage.ntlworld.com/robin.d.h.walker/cmtips/timesync.html for
how to do it) or use an on-line time source such as
http://www.time.gov/timezone.cgi?UTC/s/0/java - note that I have it
set for UTC, which is what the URL I gave will supply. It can be
changed to give US time zones, and with a little hacking will supply
any time zone.
Paul
Jack Denver
minute or so would be good enough for recording TV programs on your VCR,
which is probably the main use. There's no reason why the station couldn't
use a good quality source, e.g. GPS or radio controlled clock as a time
source, but I suppose some of them don't bother.
OTOH, I have found the pager signal to be always spot on with NIST on the
internet within the accuracy I can detect visually, so it is pretty clear
that they are using a good source.
"Paul Cooper" <a.paul....@NOntlworldSPAM.com> wrote in message
news:r9r6b0pcr0ihbcv7m...@4ax.com...
Eric Jorgensen
"Jack Denver" <nunu...@netscape.net> wrote:
> The TV signal is not really intended for any high precision use -
> within a minute or so would be good enough for recording TV programs
> on your VCR, which is probably the main use. There's no reason why the
> station couldn't use a good quality source, e.g. GPS or radio
> controlled clock as a time source, but I suppose some of them don't
> bother.
From reports I've heard, I'm certain that many of them don't know
they're broadcasting a time signal.
> OTOH, I have found the pager signal to be always spot on with NIST on
> the internet within the accuracy I can detect visually, so it is
> pretty clear that they are using a good source.
Most cell towers broadcast time periodically. My old TDMA nokia (with
ATT service, of course) updates it's time every now and then. And in
doing so beeps and turns on all it's lights and makes me think i've got
an incoming message or something.
Mike Lipphardt
news:20040525152335.3d00e165@wafer...
> Most cell towers broadcast time periodically. My old TDMA nokia (with
> ATT service, of course) updates it's time every now and then. And in
> doing so beeps and turns on all it's lights and makes me think i've got
> an incoming message or something.
Nokia phones generally suck in the usability department (I got mine free,
and dumped it for a Motorola), but I have found that the clock on my phone
was always bang on with www.time.gov. Yeah, it was ATT. I don't recall any
problem with it alerting you it did that though :)
Mike
Moka Java
Thanks for the link. My LG phone with Verizon service is visually spot
on with time.gov which is visually spot on with my cheapo analog radio
clock which is visually spot on with the GPS.
Richard "I use a sundial to set the verge fusees" F
--
Email to rtwa...@fishyahoo.com and go fishing.
Eric Jorgensen
Really? I have very few complaints about my 5165. It's so ancient
that with a modern lithium battery i can go about 10 days before i need
to charge it, and i find the UI very easy to navigate. The "BEEEEEP!"
when it updates it's time and the fact that it will tell me what time
but not what *day i missed a given call are my only gripes.
(don't get a lot of use out of the phone, on my days off i don't
even carry it with me, and then i pick it up and go "huh, is that 4pm
today or yesterday that someone i didn't need to talk to anyway made
the mistake of calling my mobile?")
My mother's qualcomm phone, on the other hand, requires that you've
read the user's manual from cover to cover. It's heartbreaking seeing
her try to use the thing. "Ok, menu, contacts . . . "
My old Ericsson actually had better audio quality than the Nokia, but
i found the UI to be clunky, and full of menu selection events that
could have been avoided entirely had they designed the software
properly. That and the battery lasted 2 days best case scenario, and
replacements were costly and hard to find. Easy to understand, just too
fiddly. But not as bad as the qualcomm.
I have to admit that i haven't used motorola, keyocera, etc. And
perhaps Sony has reworked the Ericsson software.