Packeteers
Premium
join:2005-06-18
Forest Hills, NY
4 edits |  accurate atomic/radio USA clock
I daytrade - so i need to know to the SECOND what time is it.
windows sycroniztion clocks and clock web sight scrips are off,
TV station clocks are off, even my celphone date clock is off.
this is the 21st century people;
where can i consistently get the correct time to the SECOND.
and why do so few major time sources agree with each other.
googling around i found a few USB antenna and PCI cards,
and hundreds of "atomic" clocks that claim to get the right
time, but most reviewers say they do not work consistently.
any cheap solution YOU HAVE FIRST HAND EXPERIENCE WITH
GETTING PERFECT TIMEKEEPING would be greatly appreciated.
any solution suggestion MUST be able to display HH:MM:SS
and please don't be a wise ass and post; my Dad's wrist watch. |
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alphapointe
Premium,MVM
join:2002-02-10
Columbia, MO
clubs: | »www.time.gov/
Accurate within 0.25 seconds per WWV on 5.000MHz |
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Packeteers
Premium
join:2005-06-18
Forest Hills, NY | that's a script sight - the moment you change
your PC clock - the script goes off by seconds.
... NEXT |
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ArthurS
Watch Those Blinking Lights
Premium
join:2000-10-28
Hamilton, ON | reply to Packeteers
Or get a shortwave radio, tune to WWV, and listen to the clock live. |
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Packeteers
Premium
join:2005-06-18
Forest Hills, NY
1 edit | reply to Packeteers
OK, so is there a clock device that synchronizes to WWV
regularly, and displays the time including the SECONDS.
I'm in an urban jungle - I worry I may not be able to get
WWV broadcast signal reliably - how can I check this?
can you link me to the cheapest shortwave radio
I can buy that could tune into WWV reliably. |
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alphapointe
Premium,MVM
join:2002-02-10
Columbia, MO
clubs: | All commercial atomic clocks/watches sync with WWVB.
The only thing as accurate as WWV would be getting the time off a GPS receiver, as the satellites have atomic clocks on them. |
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Packeteers
Premium
join:2005-06-18
Forest Hills, NY
1 edit | reply to Packeteers
where are these WWVB/WWV stations?
AM: 530 KHz - 1710 kHz
FM: 88 MHz - 108 MHz
SW1. 4.60 - 5.20 MHz
SW2: 5.75 - 6.40 MHz
SW3: 6.95 - 7.65 MHz
SW4: 9.30 - 9.90 MHz
SW5: 11.55 - 12.10 MHz
SW6: 13.55 - 13.85 MHz
SW7: 14.85 - 15.80 MHz
SW8: 17.40 - 18.05 MHz
SW9: 21.30 - 21.95 MHz |
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alphapointe
Premium,MVM
join:2002-02-10
Columbia, MO
clubs: | 2.500, 5.00, 10.00, 15.00 and 20.00MHz. |
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ArthurS
Watch Those Blinking Lights
Premium
join:2000-10-28
Hamilton, ON | reply to Packeteers
»tf.nist.gov/stations/wwv.html |
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ArthurS
Watch Those Blinking Lights
Premium
join:2000-10-28
Hamilton, ON | reply to Packeteers
If you look really hard, and have a deep enough wallet, you may find one of these gems:
»www.mikew.org/?p=139
You can find them occasionally on eBay, or at your local Hamfest. |
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Packeteers
Premium
join:2005-06-18
Forest Hills, NY
2 edits | reply to Packeteers
thanks guys for the short wave idea.
but there has to be an actual clock that
reliably gets their synchronizing broadcast
and displays time to the second. any idea?
if it helps, i do have access to
a new vhf/uhf/fm roof antenna. |
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ArthurS
Watch Those Blinking Lights
Premium
join:2000-10-28
Hamilton, ON | Um, the Heath GC-1000 does that to a 1/10th of a second! |
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Packeteers
Premium
join:2005-06-18
Forest Hills, NY | reply to Packeteers
yeah, but it's impractical to look for the Heath,
if you find something more current and cheap
please provide a link - thanks. |
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Jahntassa
What, I can have feathers
Premium
join:2006-04-14
Conway, SC
| Sorry, I severely doubt you're going to find what you're looking for.
Accurate and cheap are not two things that go together.
I'm not sure what problems you're having syncing your computers to NTP. I used to use a program called WinSock (from robomagic.com, I believe) that would let you sync to a variety of NTP servers almost constantly.
Beyond that, my systems sync every couple of hours, and i've never seen them actually go out of sync with realtime. |
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ArthurS
Watch Those Blinking Lights
Premium
join:2000-10-28
Hamilton, ON
| reply to Packeteers
said by Packeteers  :yeah, but it's impractical to look for the Heath, if you find something more current and cheap please provide a link - thanks. If you're looking for something current and cheap, then go to Radio Shack and get one of their atomic radio clocks for $50. I have one that synchronizes to WWV once a day, and does reasonably well to keep time within a second. The next step up would be something like the Heath I mentioned, it is a very unique clock for it's accuracy and price, but alas, you can only find them used. Beyond that, you're into lab instruments that source time from WWV or GPS signals, and are rather costly. You get what you pay for! |
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Packeteers
Premium
join:2005-06-18
Forest Hills, NY
2 edits | reply to Jahntassa
god... so forget cheap, how about least expensive.
so can you help me find something or not.
thanks for; »www.robomagic.com/swatch.htm
Arthur - I need Seconds display; $50 radio clocks rarely do. |
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ArthurS
Watch Those Blinking Lights
Premium
join:2000-10-28
Hamilton, ON | reply to Packeteers
Here's something interesting...
»www.gpsclock.com/specs.html |
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Jahntassa
What, I can have feathers
Premium
join:2006-04-14
Conway, SC
| reply to Packeteers
said by Packeteers :god... so forget cheap, how about least expensive. so can you help me find something or not. thanks for; » www.robomagic.com/swatch.htmArthur - I need Seconds display; $50 radio clocks rarely do. I gave you least expensive. Your computer. I have four on my desk right now that are accurate to the second, and all display the second. What more do you want?
LaCrosse world clocks are capable of showing seconds: »www.lacrossetechnology.com/digital.php
But personally I have yet to be able to find a spot in my house where they reliably sync to the airborne atomic clock signal. They might show synced once or twice a week.
If your computer cannot keep time, to the second, for more than a day, you may want to replace it. It may have a problem with the internal RTC that is causing your issues.
If you want an external display that shows the real-time of your PC, look into a small LCD panel like the Pertelian. »www.pertelian.com/joomla/
I'm sure you've been on these forums long enough to know that people around here do NOT like getting attitude when they are trying to help. You have given very little information on what kind of device you want. (A clock that shows seconds, vague.)
Instead try to fix the issue you are having. You think your computer clock is not accurate enough. Therefore there may be something wrong with your computer.
Perhaps the systems you are trading with do not have the correct time. Contact your broker provider and find out what time source they use for their systems, and see if they provide NTP services. Socketwatch can be set to any provider if you do not like the default NTP pool. |
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nonymous
join:2003-09-08
Glendale, AZ
| reply to Packeteers
GPS seems to be very accurate as do my computers.
What is happening to your computers clock? Something about changing the clock?
You can synch the computers as many times as needed a day.
Thing is if you daytrade you are still going to have whatever latency and other junk you do to communicate to day trade if done by computer.
The problem may not be your clock?
Do you daytrade by computer or maybe by phone? |
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public
join:2002-01-19
Santa Clara, CA
 ·DSL EXTREME
1 edit | reply to Packeteers
said by Packeteers :any cheap solution YOU HAVE FIRST HAND EXPERIENCE WITH GETTING PERFECT TIMEKEEPING would be greatly appreciated. any solution suggestion MUST be able to display HH:MM: SS Cheap is relative.
quality gps receiver error few ns
quality wwv or wwvb digital code receiver error few ms
ping multiple ntp servers error less than 100 ms
cheap digital display driven by stratum 2 quartz oscillator error few ms/year
cost of used equipment from $5
If you have reliable net connection write a script that pings stratum 2 ntp servers every few minutes to update your pc clock. |
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