[ntp:questions] almost decided which new PPS GPS to buy
David J Taylor
david-taylor at blueyonder.co.uk.invalid
Mon Mar 5 09:36:18 UTC 2012
"Ron Frazier (NTP)" <timekeepingntplist at c3energy.com> wrote in message
news:4F53EEAF.9050704 at c3energy.com...
> Interesting that you used a metal box. I guess it doesn't matter since
> the antenna is external. I think a clear lid might be cool to see the
The blue LED is so bright you will want to hide it! A metal box will
provide shielding, of course.
> I have three computers, all of which dual boot between some version of
> Windows and Ubuntu 11.04. Two of those are laptops. I also have an old
> Pentium 4 laptop which only runs Ubuntu. (It makes a nice heater. It's
> nickname in the industry is global thermonuclear reactor.) I try to
> keep all of these 6 main configurations functionally equivalent. I'd
> like to be able to plug a GPS into any one and have it work, with any
> OS. Two of the three main PC's are laptops, with no real serial port.
> I started with the BU-353 on one particular laptop. That unit has a
> built in Prolific serial - USB circuit. I'm curious to see how the
> performance is using an external serial - USB chipset (which just
> happens to use the same chipset). For the two laptops, USB is the only
> way into the machine. Also, I may want to use the laptop for navigation
> some day.
For testing and experimenting I can appreciate your needs.
> Mainly curiosity. I'm getting + / - 6 ms from a USB only device now. I
> want to see what the max performance I can get with USB with handshaking
> is possible. I think I can break the + / - 1 ms barrier. Why do you
> climb Mount Everest - because it's there! PS - I would never climb
> Mount Everest - I hate high places with steep cliffs and without walls -
> and I hate the cold.
You wouldn't have liked my recent holiday in Northern Norway in the
Winter! I did enjoy the dry heat of Melbourne - +36°C +37°C +38°C on
> Thanks for the help. I'm not the best with mechanical things, I'm
> better at electronic or software things. However, I can work my way
> around a screwdriver, wrench, Dremel tool, and soldering iron if I have
> to. If I can even find those tools, but that's another story. I'm sure
> parts of this will be fun, and I'm sure the project will be interesting.
> I'll try to report back on my findings.
My second Sure board is sitting in an anti-static bag, inside a thick
black bag to keep the blue LED from dazzling me. I don't see any
performance difference between the boxed and the naked one. Have fun!
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