<p>They need to disable the dead reckoning feature or at least insure pps doesn't go out if there is a problem with the fix. For maps/nav, keeping the stream intact for a few seconds is good, but not if you need precision.</p>
<p>This does not affect the hotstart memory, only what it does if it loses enough signal so the fix is lost.</p>
<div class="gmail_quote">On May 9, 2012 2:43 AM, "Jau-Yang Chen" <<a href="mailto:cjy@navisys.com.tw">cjy@navisys.com.tw</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Dear Eric,<br>
<br>
Thanks. We are more than happy that our GR-601W USB GPS receiver meets your<br>
requirement. It's surely useful and helpful to your Bufferbloat project, NTP<br>
project and GPSD project.<br>
<br>
If the GPS receiver fixes the position, it could keep position-fix easily<br>
even entering obstructed environment with its tracking engine. On the<br>
contrary, it might be harder to fix the position from cold start with its<br>
acquisition engine under the same obstructed environment. There is built-in<br>
battery inside GR-601W to support the hot start and warm start. Anyway, we<br>
fulfill the advantage of u-blox6 chipset to provide the excellent<br>
performance.<br>
<br>
Thanks for your introduction of Mr. Jim Thompson at Netgate as our retailer<br>
partner in USA. It will be great and much appreciated if we could have a<br>
channel to sell this winning product in Amazon. To thank you and Dave's good<br>
idea and great support, GR-601W also has a nickname Macx-1.<br>
<br>
We plan to put an article as attached on our website for advertisement.<br>
Could you please review and comment? It will be helpful to promote Macx-1<br>
USB GPS receiver if you could also put it in the website of your<br>
SIG/project.<br>
<br>
Thanks in advance and best regards,<br>
<br>
JY<br>
<br>
<br>
-----Original Message-----<br>
From: Eric S. Raymond [mailto:<a href="mailto:esr@thyrsus.com">esr@thyrsus.com</a>]<br>
Sent: Tuesday, May 08, 2012 10:50 AM<br>
To: veronica<br>
Cc: <a href="mailto:thumbgps-devel@lists.bufferbloat.net">thumbgps-devel@lists.bufferbloat.net</a><br>
Subject: GR-601W success<br>
<br>
Gary sent me one of the three GR-601W samples, and I now have had time to<br>
evaluate its performance over several days.<br>
<br>
Please tell your product team that I am *extremely* pleased with this<br>
device. Not only is it is delivering good 1PPS with exactly the jitter we<br>
predicted in the design study, it functions excellently indoors; even though<br>
I have had it on a desk five feet from a window with a poor skyview blocked<br>
by large trees, it does not seem to have lost satellite lock even once since<br>
it was powered up.<br>
<br>
I like everything about this device. The performance, the simplicity, the<br>
small form factor - it couldn't be better for my project's needs if I had<br>
designed it myself. :-) Your people did a terrific job on this and deserve<br>
congratulations.<br>
<br>
My next step is going to be to ensure that you have a retail partner in the<br>
U.S. You may already have been approached by Jim Thompson at netgate; I'm<br>
also trying to find the right person to get Amazon to carry the product.<br>
<br>
If there is any other way in which I can assist a successful launch of the<br>
product, please feel free to ask. One possibility: if you have product<br>
documentation in English other that the one data sheet I have seen, I would<br>
be happy to review and improve it for you.<br>
--<br>
<a href="<a href="http://www.catb.org/~esr/" target="_blank">http://www.catb.org/~esr/</a>">Eric S. Raymond</a><br>
<br>
As war and government prove, insanity is the most contagious of<br>
diseases. -- Edward Abbey<br>
<br>
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<br></blockquote></div>