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<title>accurate atomic/radio USA clock in Electronics</title>
<link>http://www.dslreports.com/forum/r23273344</link>
<description></description>
<language>en</language>
<pubDate>Wed, 10 Feb 2010 06:42:19 EDT</pubDate>
<lastBuildDate>Wed, 10 Feb 2010 06:42:19 EDT</lastBuildDate>

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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23368285</link>
<description><![CDATA[<A HREF="/useremail/u/0"><b>anon</b></A> : <div class="bquote"><small>said by  Packeteers <A HREF="/useremail/u/1220943"><IMG SRC="http://i.dslr.net/bb/profile.gif" ALT="See Profile" BORDER=0 WIDTH=16 HEIGHT=11></A> :</small><br><br>any cheap solution<br> </div>Negative....  &raquo;<A HREF="http://www.ntp-time-server.com/" >www.ntp-time-server.com/</A><br><br>&raquo;<A HREF="http://www.ntp-time-server.com/time-server/gps-ntp-server.html" >www.ntp-time-server.com/time-ser&middot;&middot;&middot;ver.html</A>]]></description>
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<pubDate>Fri, 20 Nov 2009 07:11:36 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23343808</link>
<description><![CDATA[<A HREF="/useremail/u/638673"><b>kruser</b></A> : <div class="bquote"><small>said by  ArthurS <A HREF="/useremail/u/229702"><IMG SRC="http://i.dslr.net/bb/profile.gif" ALT="See Profile" BORDER=0 WIDTH=16 HEIGHT=11></A> :</small><br><br>If you look really hard, and have a deep enough wallet, you may find one of these gems:<br>&raquo;<A HREF="http://www.mikew.org/?p=139" >www.mikew.org/?p=139</A><br><br>You can find them occasionally on eBay, or at your local Hamfest.<br> </div>I have the Heathkit GC-1000 clock.  I bought and built it when they first released them.<br>Mine still works great to this day. I never did buy the RS-232 option but with today's networks I would no longer need it anyhow. I did have to replace the two calibration pots in the GC-1000. Mine would get dirty and then no sync. I finally replaced them both with 15 turn pots and that seems to have solved the problem.<br>I also power mine from an external 12 volt source as the internal power supply ran very hot so this alone may have extended the life of my clock. You can also kill a lot of the heat by sliding the display switch off but then why have the clock :D<br>Thanks for that link. I'd forgotten what the front panel looks like as mine fell off somehow and was subsequently smashed to pieces and I had to replace it with a piece of smoked plastic.]]></description>
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<pubDate>Sun, 15 Nov 2009 10:12:36 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23340998</link>
<description><![CDATA[<A HREF="/useremail/u/1220943"><b>Packeteers</b></A> : Thanks for chiming in about D4.<br>I think I like it a bit better than SW<br>since when I boot; it will load, wait,<br>sync, then <u>unload</u> automatically.<br>This works best for me since I boot<br>my PC every morning before work.<br>(I'd rather not run it as a service)<br><br>BTW if anyone reading this thread<br>needs a way to display seconds on<br>their toolbar clock in Windows XP,<br>I've been using this for Months, and<br>it seems to behave itself thus far;<br><br>&raquo;<A HREF="http://www.drive-software.com/atomicalarmclock.html" >www.drive-software.com/atomicalarmclock.html</A><br><br>I use the plain "Black-White" skin.<br>I just wish there was a way to stop<br>the :colons: from blinking...]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23340998</guid>
<pubDate>Sat, 14 Nov 2009 13:39:15 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23340080</link>
<description><![CDATA[<A HREF="/useremail/u/1340949"><b>SmokChsr</b></A> : it works that's for sure.. Here's a little clip from the sync history.<br><br>2009-11-12&#9;17:29:46.661&#9;-8.350086e-002&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-12&#9;19:59:46.691&#9;-4.763722e-002&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-12&#9;22:29:46.729&#9;-5.428410e-002&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-13&#9;00:59:46.791&#9;-4.697156e-002&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-13&#9;03:29:46.821&#9;-6.259251e-002&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-13&#9;05:59:51.842&#9;-5.637980e-002&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-13&#9;08:29:51.889&#9;-6.160450e-002&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-13&#9;10:59:51.794&#9;-1.726718e-001&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-13&#9;13:29:51.836&#9;-5.099821e-002&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-13&#9;15:59:51.800&#9;-1.135590e-001&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-13&#9;18:29:51.801&#9;-6.049466e-002&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-13&#9;20:59:52.883&#9;-4.253006e-002&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-13&#9;23:29:52.919&#9;-4.172492e-002&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-14&#9;01:59:52.951&#9;-4.517555e-002&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-14&#9;04:29:58.010&#9;-4.964280e-002&#9;ntp2.usno.navy.mil&#9;SNTP<br>2009-11-14&#9;06:59:58.022&#9;-4.969931e-002&#9;ntp2.usno.navy.mil&#9;SNTP]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23340080</guid>
<pubDate>Sat, 14 Nov 2009 08:28:44 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23340076</link>
<description><![CDATA[<A HREF="/useremail/u/582493"><b>alphapointe</b></A> : D4 is what I use on my WXPSP3 boxes.  I love it.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23340076</guid>
<pubDate>Sat, 14 Nov 2009 08:26:40 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23340070</link>
<description><![CDATA[<A HREF="/useremail/u/1340949"><b>SmokChsr</b></A> : Another Free method to keep your PC time on target is a program called Dimension 4. <br>&raquo;<A HREF="http://www.thinkman.com/dimension4/" >www.thinkman.com/dimension4/</A><br>I haven't put it on anything newer than 2K pro. But it will probably work.  ]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23340070</guid>
<pubDate>Sat, 14 Nov 2009 08:21:12 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23283567</link>
<description><![CDATA[<A HREF="/useremail/u/217865"><b>cowboyro</b></A> : NTP time servers for the PC. They will make your computer accurate within fractions of a second. The fact that "windows sycroniztion clocks and clock web sight scrips are off" is pure BS.<br>The Windows Time service can be set to sync many times per day and skew the clock to compensate for the inherent tolerance.<br>&raquo;<A HREF="http://support.microsoft.com/kb/223184" >support.microsoft.com/kb/223184</A><br>Use a list of preferred servers instead of time.windows.com<br>I suggest using a list of 5-6 servers from &raquo;<A HREF="http://tf.nist.gov/tf-cgi/servers.cgi" >tf.nist.gov/tf-cgi/servers.cgi</A> and also pool.ntp.org (which also points to a list of servers)<br>Yes it works and it is *very accurate*. I deal with computers for a living... in a trading firm.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23283567</guid>
<pubDate>Tue, 03 Nov 2009 10:02:58 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23276935</link>
<description><![CDATA[<A HREF="/useremail/u/276613"><b>cosmicvoid</b></A> : <div class="bquote"><small>said by  public <A HREF="/useremail/u/565356"><IMG SRC="http://i.dslr.net/bb/profile.gif" ALT="See Profile" BORDER=0 WIDTH=16 HEIGHT=11></A> :</small><br><br>Then again it may be possible to place an weatherproof antenna on the roof. </div>Yup, there are dome type models, made to mount on a mast. Like the kind you see sticking up above semi-truck cabs.<br><br>I conceed an inside room in a hi-rise building may be problematic without an outdoor sensor.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23276935</guid>
<pubDate>Mon, 02 Nov 2009 01:10:41 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23276686</link>
<description><![CDATA[<A HREF="/useremail/u/565356"><b>public</b></A> : <div class="bquote"><small>said by  cosmicvoid <A HREF="/useremail/u/276613"><IMG SRC="http://i.dslr.net/bb/profile.gif" ALT="See Profile" BORDER=0 WIDTH=16 HEIGHT=11></A> :</small><br><br>I use GPS to constantly correct my PC clock. Unlike the opinion  public <A HREF="/useremail/u/565356"><IMG SRC="http://i.dslr.net/bb/profile.gif" ALT="See Profile" BORDER=0 WIDTH=16 HEIGHT=11></A> gives, my OEM model Garmin 18x-LVC has no problems at all getting a reliable signal indoors.<br> </div>Indoor means multistory commercial building. Single story residence YMMV.<br>Then again it may be possible to place an weatherproof antenna on the roof.]]></description>
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<pubDate>Sun, 01 Nov 2009 23:29:46 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23275472</link>
<description><![CDATA[<A HREF="/useremail/u/239636"><b>tschmidt</b></A> : What flavor of Windows do you use? Newer versions synchronize to NTP time servers.<br><br>I use Tardis on our LAN server and K9 to synchronize all the PC. <br>&raquo;<A HREF="http://www.kaska.demon.co.uk/tardis.htm" >www.kaska.demon.co.uk/tardis.htm</A> accessing the US.pool.ntp.org pool.<br><br>This will be as accurate as round trip time typically a few tens of milliseconds.<br>&raquo;<A HREF="http://tf.nist.gov/service/its.htm" >tf.nist.gov/service/its.htm</A><br><br>If you want to sync PC clock to WWV will need to use something like this:<br>&raquo;<A HREF="http://www.ntp-time-server.com/time-servers/pc-atomic-clock.html" >www.ntp-time-server.com/time-ser&middot;&middot;&middot;ock.html</A><br>&raquo;<A HREF="http://www.atomictimeclock.com/radsynhome.htm" >www.atomictimeclock.com/radsynhome.htm</A><br><br>&raquo;<A HREF="http://tf.nist.gov/timefreq/stations/radioclocks.htm" >tf.nist.gov/timefreq/stations/ra&middot;&middot;&middot;ocks.htm</A> <br><br>Of if you want to sync to GPS sats:<br>&raquo;<A HREF="http://www.atomictimeclock.com/starsync.php" >www.atomictimeclock.com/starsync.php</A><br><br> ]]></description>
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<pubDate>Sun, 01 Nov 2009 17:42:52 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23275143</link>
<description><![CDATA[<A HREF="/useremail/u/276613"><b>cosmicvoid</b></A> : I use GPS to constantly correct my PC clock. Unlike the opinion  public <A HREF="/useremail/u/565356"><IMG SRC="http://i.dslr.net/bb/profile.gif" ALT="See Profile" BORDER=0 WIDTH=16 HEIGHT=11></A> gives, my OEM model Garmin 18x-LVC has no problems at all getting a reliable signal indoors.<br><br>I wrote a custom piece of software to listen to the GPS NMEA output and monitor the PPS pulse output, and do system time set function calls when the deviation exceeds a selectable amount.<br><br>BTW, this app was written for a friend who uses it to ensure accurate time on the PC that does his astronomy telescope aiming. (This was an alternative to him spending $250 to $750 on the Starsync package.)<div class="borderless"><TABLE WIDTH=95% align=center border=0 CELLPADDING=4"><TR><TD ALIGN=CENTER VALIGN=CENTER BGCOLOR=#FFFFFF nwrap COLSPAN=2 WIDTH=66%><A HREF="/speak/slideshow/23275143?c=1485417&ret=L2ZvcnVtL3IyMzI3MzM0NC54bWw%3D"><IMG TITLE="7772 bytes" BORDER=0 WIDTH=364 HEIGHT=260 SRC="/r0/download/1485417~20063dff545afc5066db5bd0c52869c5/timesync.gif"></A><br>my custom app runs in system tray</TD></TABLE></div>]]></description>
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<pubDate>Sun, 01 Nov 2009 15:52:38 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23275099</link>
<description><![CDATA[<A HREF="/useremail/u/565356"><b>public</b></A> : <div class="bquote"><small>said by  Packeteers <A HREF="/useremail/u/1220943"><IMG SRC="http://i.dslr.net/bb/profile.gif" ALT="See Profile" BORDER=0 WIDTH=16 HEIGHT=11></A> :</small><br><br>NightVisor - you make a good point that the trading clock may be off a few seconds compared to atomic NIST clocks, possibly because the trading clock is linked to clocks tied to international markets worldwide.  </div>Not likely. There are legal requirements for financial transaction services to be NIST traceable.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23275099</guid>
<pubDate>Sun, 01 Nov 2009 15:37:50 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23274965</link>
<description><![CDATA[<A HREF="/useremail/u/565356"><b>public</b></A> : <div class="bquote"><small>said by  Packeteers <A HREF="/useremail/u/1220943"><IMG SRC="http://i.dslr.net/bb/profile.gif" ALT="See Profile" BORDER=0 WIDTH=16 HEIGHT=11></A>  :</small><br><br>are GPS devices like TomTom any better at getting INDOOR reception than NIST Radio reception clocks?  my guess is since such tiny GPS are designed for outdoor use, that the clock may become unreliable if kept indoors (away from windows) all the time.<br> </div>GPS will not work indoor with any reasonable antenna.<br>Example receiver<br>&raquo;<A HREF="http://www.spectracomcorp.com/Products/Master_Clocks/EpsilonClockModelEC2S/tabid/865/Default.aspx" >www.spectracomcorp.com/Products/&middot;&middot;&middot;ult.aspx</A><br>example local time server rack<br>check ebay for older spectracom and similar receivers.<div class="borderless"><TABLE WIDTH=95% align=center border=0 CELLPADDING=4"><TR><TD ALIGN=CENTER VALIGN=CENTER BGCOLOR=#FFFFFF nwrap COLSPAN=3 WIDTH=100%><A HREF="/speak/slideshow/23274965?c=1485401&ret=L2ZvcnVtL3IyMzI3MzM0NC54bWw%3D"><IMG class="apic" BORDER=0 TITLE="78750 bytes" WIDTH=600 HEIGHT=453 SRC="/r0/download/1485401.thumb600~7ede6587d6ff03a32d8303e3b1398e41/TimeServerReference.JPG/thumb.jpg" ALT="Click for full size"></A><br>example local time server rack</TD></TABLE></div>]]></description>
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<pubDate>Sun, 01 Nov 2009 14:59:56 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23274439</link>
<description><![CDATA[<A HREF="/useremail/u/1220943"><b>Packeteers</b></A> : NightVisor - you make a good point that the trading clock may be off a few seconds compared to atomic NIST clocks, possibly because the trading clock is linked to clocks tied to international markets worldwide.  SocketWatch has "Time Correction Settings" where I can add/subtract a few seconds between the NIST Server time it syncs to over the internet, and what time I display on my PC clock in order to best correlate to the clock my trading systems uses.  <i>My observations up till now - point to a ~15 second discrepancy between when the stock market opens/closes and NIST, and between NIST and the clocks I see used during regional TV news programs.</i><br><br>are GPS devices like TomTom any better at getting INDOOR reception than NIST Radio reception clocks?  my guess is since such tiny GPS are designed for outdoor use, that the clock may become unreliable if kept indoors (away from windows) all the time.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23274439</guid>
<pubDate>Sun, 01 Nov 2009 12:09:24 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23274388</link>
<description><![CDATA[<A HREF="/useremail/u/329504"><b>NightVisor</b></A> : Solutions I have personally used (and still use)<br><br>If you want to sync with the US Atomic clock...<br>Computer (can be configured to show seconds, free desktop clock programs showing seconds also available): NTP &raquo;<A HREF="http://support.ntp.org/bin/view/Servers/NTPPoolServers" >support.ntp.org/bin/view/Servers&middot;&middot;&middot;lServers</A><br>GPS Device (will show seconds if you go to status screen): TomTom One &raquo;<A HREF="http://www.tomtom.com/products/product.php?ID=487&Category=0&Lid=4" >www.tomtom.com/products/product.&middot;&middot;&middot;=0&Lid=4</A> (time accurately set by GPS satellites)<br><br>However, since you daytrade...<br>Ask your broker (or trading contact), what service they use for time keeping. Then set your clock to what they use instead. As a daytrader, abiding by the clock your broker uses takes precedent over any other method.<br><br>(Edited to show seconds information.)]]></description>
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<pubDate>Sun, 01 Nov 2009 11:52:17 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23274373</link>
<description><![CDATA[<A HREF="/useremail/u/1220943"><b>Packeteers</b></A> : Please don't sidetrack this thread into "if PC clocks (alone) are accurate or symptomatic of problems",  I already have my own long confirmed opinion on that...<br><br>Thanks for the Lacrosse or OregonSci clock idea - but reception is the major problem with them.  Maybe if I could find an inexpensive second-display clock I could hook up to an external antenna or my roof RG6U cable, that would be helpful - if anyone knows of one besides that old Heath.<br><br>Again, thanks for the SocketWatch idea.  when I started this thread I was not aware there were hundreds of public domain time servers out there.  I thought there were only the two that came with windows, and if you got timed out from them, you were screwed.  srr2 - thanks for letting me know you could get under windows hood and tweek those setting so the few servers you hit can be less likely to time you out.<br><br>The ultimate "test" will be Monday when my 100 issue stock streamer actually comes to life seconds after my now synced PC clock reads 09:30:01.  My PC Latency is 10ms and my trades go thru within seconds using special Java software (not a browser), so getting every second right is really helpful.  I plan on re-syncing hourly - more than that would be piggy.<br><br>Sorry for my frustrated attitude - I read a lot of intelligent people here only trying to be helpful.]]></description>
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<pubDate>Sun, 01 Nov 2009 11:48:46 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23274345</link>
<description><![CDATA[<A HREF="/useremail/u/1395925"><b>Selenia</b></A> : <div class="bquote"><small>said by  Jahntassa <A HREF="/useremail/u/1349487"><IMG SRC="http://i.dslr.net/bb/profile.gif" ALT="See Profile" BORDER=0 WIDTH=16 HEIGHT=11></A> :</small><br><br>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.<br></div><div class="bquote"><small>said by  Jahntassa <A HREF="/useremail/u/1349487"><IMG SRC="http://i.dslr.net/bb/profile.gif" ALT="See Profile" BORDER=0 WIDTH=16 HEIGHT=11></A> :</small><br><br>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.<br><br>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.<br> </div>Bullox. I've administrated several systems that came down with this issue and while your quote is a remote possibility, it is very highly unlikely. Not one of said systems losing sync had anything to do with the mobo or the time server(a bit more likely). The CMOS battery was to blame in all my cases. I've even had a couple arrive flat. Sorry if I debunked this post a bit strongly, but the OP should check the least expensive and most likely first.]]></description>
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<pubDate>Sun, 01 Nov 2009 11:40:01 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23274120</link>
<description><![CDATA[<A HREF="/useremail/u/542968"><b>srr2</b></A> : This isn't rocket surgery.<br><br>First Google a current list of public NTP servers.  Choose a few that are geographically close to you.  Run a traceroute to them to find fewest hops and lowest ping time.  You may have to make a tradeoff with hops and ping time if the route traverses some heavily loaded routers.<br><br>Now click on the "Internet Time" tab of the Windows time setting window.  "Change Settings" button.  Enter the server you picked.  Click the Update Now button to prove that the server will update your PC's clock.<br><br>Start Regedit.  Search for a value called "SpecialPollInterval".  It's present in two places.  Change them from the default 604800 (dec) to 1800 (dec).  This will update your clock every half hour.  <br><br>Done.<br><br>Do NOT go hitting public servers every minute or two.  It's very bad manners and it's not necessary.  Depending on the stability of the clock in your PC and whether there are any processes running that interfere with the timekeeping interrupt processes, even the 1800 second interval might be unnecessarily short.  You can expect absolute errors under 100msec.<br><br>If you have several PCs on your local network, you might consider setting up one of them as a master time server and having the others poll it.  That would keep the queries to the public server to a minimum.  W32Time can do this.  Google for instructions on how to set it up.]]></description>
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<pubDate>Sun, 01 Nov 2009 10:30:50 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273579</link>
<description><![CDATA[<A HREF="/useremail/u/163824"><b>SparkChaser</b></A> : I tune my lap top to time.gov and the radio to wwv and they are together within a second.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273579</guid>
<pubDate>Sun, 01 Nov 2009 05:40:53 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273518</link>
<description><![CDATA[<A HREF="/useremail/u/565356"><b>public</b></A> : <div class="bquote"><small>said by  Packeteers <A HREF="/useremail/u/1220943"><IMG SRC="http://i.dslr.net/bb/profile.gif" ALT="See Profile" BORDER=0 WIDTH=16 HEIGHT=11></A>  :</small><br><br>any cheap solution YOU HAVE FIRST HAND EXPERIENCE WITH<br>GETTING PERFECT TIMEKEEPING would be greatly appreciated.<br><br>any solution suggestion MUST be able to display HH:MM:<b>SS</b> </div>Cheap is relative.<br>quality gps receiver  error few ns<br>quality wwv  or wwvb digital code receiver  error few ms<br>ping multiple ntp servers  error less than 100 ms<br>cheap digital display driven by stratum 2 quartz oscillator  error few ms/year<br>cost of used equipment from $5<br><br>If you have reliable  net connection write a script that pings stratum 2 ntp servers every few minutes to update your pc clock.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273518</guid>
<pubDate>Sun, 01 Nov 2009 04:04:08 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273492</link>
<description><![CDATA[<A HREF="/useremail/u/871781"><b>nonymous</b></A> : GPS seems to be very accurate as do my computers. <br>What is happening to your computers clock? Something about changing the clock?<br>You can synch the computers as many times as needed a day. <br>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. <br>The problem may not be your clock?<br>Do you daytrade by computer or maybe by phone?]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273492</guid>
<pubDate>Sun, 01 Nov 2009 03:27:19 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273442</link>
<description><![CDATA[<A HREF="/useremail/u/1349487"><b>Jahntassa</b></A> : <div class="bquote"><small>said by  Packeteers <A HREF="/useremail/u/1220943"><IMG SRC="http://i.dslr.net/bb/profile.gif" ALT="See Profile" BORDER=0 WIDTH=16 HEIGHT=11></A> :</small><br><br>god... so forget cheap, how about least expensive.<br>so can you help me find something or not.<br><br>thanks for; &raquo;<A HREF="http://www.robomagic.com/swatch.htm" >www.robomagic.com/swatch.htm</A><br><br>Arthur - I need Seconds display; $50 radio clocks rarely do.<br> </div>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?<br><br>LaCrosse world clocks are capable of showing seconds: &raquo;<A HREF="http://www.lacrossetechnology.com/digital.php" >www.lacrossetechnology.com/digital.php</A><br><br>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.<br><br>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.<br><br>If you want an external display that shows the real-time of your PC, look into a small LCD panel like the Pertelian. &raquo;<A HREF="http://www.pertelian.com/joomla/" >www.pertelian.com/joomla/</A><br><br>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.)<br><br>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.<br><br>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.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273442</guid>
<pubDate>Sun, 01 Nov 2009 02:23:16 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273426</link>
<description><![CDATA[<A HREF="/useremail/u/229702"><b>ArthurS</b></A> : Here's something interesting...<br>&raquo;<A HREF="http://www.gpsclock.com/specs.html" >www.gpsclock.com/specs.html</A>]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273426</guid>
<pubDate>Sun, 01 Nov 2009 01:58:25 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273420</link>
<description><![CDATA[<A HREF="/useremail/u/1220943"><b>Packeteers</b></A> : god... so forget cheap, how about least expensive.<br>so can you help me find something or not.<br><br>thanks for; &raquo;<A HREF="http://www.robomagic.com/swatch.htm" >www.robomagic.com/swatch.htm</A><br><br>Arthur - I need Seconds display; $50 radio clocks rarely do.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273420</guid>
<pubDate>Sun, 01 Nov 2009 01:53:00 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273419</link>
<description><![CDATA[<A HREF="/useremail/u/229702"><b>ArthurS</b></A> : <div class="bquote"><small>said by  Packeteers <A HREF="/useremail/u/1220943"><IMG SRC="http://i.dslr.net/bb/profile.gif" ALT="See Profile" BORDER=0 WIDTH=16 HEIGHT=11></A> :</small><br><br>yeah, but it's impractical to look for the Heath, <br>if you find something more current and cheap<br>please provide a link - thanks.<br> </div>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!]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273419</guid>
<pubDate>Sun, 01 Nov 2009 01:52:20 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273416</link>
<description><![CDATA[<A HREF="/useremail/u/1349487"><b>Jahntassa</b></A> : Sorry, I severely doubt you're going to find what you're looking for.<br><br>Accurate and cheap are not two things that go together.<br><br>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.<br><br>Beyond that, my systems sync every couple of hours, and i've never seen them actually go out of sync with realtime.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273416</guid>
<pubDate>Sun, 01 Nov 2009 01:50:01 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273409</link>
<description><![CDATA[<A HREF="/useremail/u/1220943"><b>Packeteers</b></A> : yeah, but it's impractical to look for the Heath, <br>if you find something more current and cheap<br>please provide a link - thanks.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273409</guid>
<pubDate>Sun, 01 Nov 2009 01:45:58 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273402</link>
<description><![CDATA[<A HREF="/useremail/u/229702"><b>ArthurS</b></A> : Um, the Heath GC-1000 does that to a 1/10th of a second!]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273402</guid>
<pubDate>Sun, 01 Nov 2009 01:42:52 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273398</link>
<description><![CDATA[<A HREF="/useremail/u/1220943"><b>Packeteers</b></A> : thanks guys for the short wave idea.<br><br>but there has to be an actual clock that <br>reliably gets their synchronizing broadcast<br>and displays time to the second.  any idea?<br><br>if it helps, i do have access to<br>a new vhf/uhf/fm roof antenna.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273398</guid>
<pubDate>Sun, 01 Nov 2009 01:38:19 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273397</link>
<description><![CDATA[<A HREF="/useremail/u/229702"><b>ArthurS</b></A> : If you look really hard, and have a deep enough wallet, you may find one of these gems:<br>&raquo;<A HREF="http://www.mikew.org/?p=139" >www.mikew.org/?p=139</A><br><br>You can find them occasionally on eBay, or at your local Hamfest.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273397</guid>
<pubDate>Sun, 01 Nov 2009 01:37:21 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273390</link>
<description><![CDATA[<A HREF="/useremail/u/229702"><b>ArthurS</b></A> : &raquo;<A HREF="http://tf.nist.gov/stations/wwv.html" >tf.nist.gov/stations/wwv.html</A>]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273390</guid>
<pubDate>Sun, 01 Nov 2009 01:35:23 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273388</link>
<description><![CDATA[<A HREF="/useremail/u/582493"><b>alphapointe</b></A> : 2.500, 5.00, 10.00, 15.00 and 20.00MHz.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273388</guid>
<pubDate>Sun, 01 Nov 2009 01:35:03 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273377</link>
<description><![CDATA[<A HREF="/useremail/u/1220943"><b>Packeteers</b></A> : where are these WWVB/WWV stations?<br><br>AM: 530 KHz - 1710 kHz<br>FM: 88 MHz - 108 MHz<br><br>SW1. 4.60 - 5.20 MHz <br>SW2: 5.75 - 6.40 MHz<br>SW3: 6.95 - 7.65 MHz<br>SW4: 9.30 - 9.90 MHz<br>SW5: 11.55 - 12.10 MHz<br>SW6: 13.55 - 13.85 MHz<br>SW7: 14.85 - 15.80 MHz <br>SW8: 17.40 - 18.05 MHz<br>SW9: 21.30 - 21.95 MHz]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273377</guid>
<pubDate>Sun, 01 Nov 2009 01:31:51 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273374</link>
<description><![CDATA[<A HREF="/useremail/u/582493"><b>alphapointe</b></A> : All commercial atomic clocks/watches sync with WWVB.<br><br>The only thing as accurate as WWV would be getting the time off a GPS receiver, as the satellites have atomic clocks on them.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273374</guid>
<pubDate>Sun, 01 Nov 2009 01:31:03 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273366</link>
<description><![CDATA[<A HREF="/useremail/u/1220943"><b>Packeteers</b></A> : OK, so is there a clock device that synchronizes to WWV<br>regularly, and displays the time including the SECONDS.<br><br>I'm in an urban jungle - I worry I may not be able to get<br>WWV broadcast signal reliably - how can I check this?<br><br>can you link me to the cheapest shortwave radio<br>I can buy that could tune into WWV reliably.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273366</guid>
<pubDate>Sun, 01 Nov 2009 01:27:10 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273363</link>
<description><![CDATA[<A HREF="/useremail/u/229702"><b>ArthurS</b></A> : Or get a shortwave radio, tune to WWV, and listen to the clock live.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273363</guid>
<pubDate>Sun, 01 Nov 2009 01:23:57 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273362</link>
<description><![CDATA[<A HREF="/useremail/u/1220943"><b>Packeteers</b></A> : that's a script sight - the moment you change<br>your PC clock - the script goes off by seconds.<br><br>... NEXT]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273362</guid>
<pubDate>Sun, 01 Nov 2009 01:23:56 EDT</pubDate>
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<title>Re: accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273361</link>
<description><![CDATA[<A HREF="/useremail/u/582493"><b>alphapointe</b></A> : &raquo;<A HREF="http://www.time.gov/" >www.time.gov/</A><br><br>Accurate within 0.25 seconds per WWV on 5.000MHz]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273361</guid>
<pubDate>Sun, 01 Nov 2009 01:22:30 EDT</pubDate>
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<title>accurate atomic/radio USA clock</title>
<link>http://www.dslreports.com/forum/remark,23273344</link>
<description><![CDATA[<A HREF="/useremail/u/1220943"><b>Packeteers</b></A> : I daytrade - so i need to know to the SECOND what time is it.<br>windows sycroniztion clocks and clock web sight scrips are off,<br>TV station clocks are off, even my celphone date clock is off.<br><br>this is the 21st century people;<br>where can i consistently get the correct time to the SECOND.<br><i>and why do so few major time sources agree with each other.</i><br><br>googling around i found a few USB antenna and PCI cards,<br>and hundreds of "atomic" clocks that claim to get the right<br>time, but most reviewers say they do not work consistently.<br><br>any cheap solution YOU HAVE FIRST HAND EXPERIENCE WITH<br>GETTING PERFECT TIMEKEEPING would be greatly appreciated.<br><br>any solution suggestion MUST be able to display HH:MM:<b>SS</b><br>and please don't be a wise ass and post; my Dad's wrist watch.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23273344</guid>
<pubDate>Sun, 01 Nov 2009 01:13:27 EDT</pubDate>
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