[time-nuts] GPS unit for car navigation -OT ??

Robert Lutwak Lutwak at Alum.mit.edu
Sun Oct 22 19:26:04 EDT 2006

How's the timing accuracy?

Does it display GPS time or does it have it's own clock?


Robert Lutwak, Senior Scientist
Symmetricom - Technology Realization Center
34 Tozer Rd.
Beverly, MA 01915
(978) 232-1461   Voice           RLutwak at Symmetricom.com   (Business)
(978) 927-4099   FAX             Lutwak at Alum.MIT.edu  (Personal)
(339) 927-7896   Mobile

----- Original Message ----- 
From: "James Maynard" <james.h.maynard at usa.net>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Sunday, October 22, 2006 7:12 PM
Subject: Re: [time-nuts] GPS unit for car navigation -OT ??

> xaos wrote:
>> Hello everyone,
>> I have, until now, resisted the urge to buy a GPS navigation system for
>> my car.
>> However, I now have to do some traveling and new and unknown addresses
>> keep popping up.
>> There are several different GPS units on the market and they all look OK
>> (i guess).
>> I just want to know which units do the members here consider to be the
>> best for
>> this sort of thing?
>> Many thanks in advance,
>> -George Hrysanthopoulos, N2FGX
> I really like my Garmin StreetPilot 7200. Its GPS receiver has WAAS
> correction capability, it has a built-in database of street maps for the
> entire USA, and its large display, perched atop the dashboard of my car,
> is very readable to my aging eyes.  In my car, my view of the
> speedometer is obscured by the steering wheel, so I use the GPS receiver
> as my primary speedometer display, too.
> I usually set it just to display a moving map. In that mode, it shows
> the name of the next cross-street that I will encounter at the top of
> the screen -- much easier to read with my aging eyes than the street
> sign on the corner! It also shows my speed and the time of day.
> Occasionally I will set it to compute a route for me to follow,
> particularly when driving to someplace unfamiliar. In that mode, it
> doesn't display the time of day, but instead displays the estimated time
> of arrival at the distination -- something that I'm not as interested in
> knowing. At intersections where the calculated route changes from one
> street or highway to another, it zooms in automatically as I approach
> the intersection and zooms out automatically after making the turn.
> It didn't hurt that, as a Garmin employee, I got a nice employee discount!
> ----
> James Maynard, K7KK
> Salem, Oregon, USA
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