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

[James Maynard]

Robert Lutwak wrote:
> How's the timing accuracy?
> 
> Does it display GPS time or does it have it's own clock?
> 
> 
> -RL
> 
> ------------------------------------------------------------
> 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
> 
The Garmin StreetPilot 7200 is not a timing receiver. It displays local 
time of day in hours and minutes, and seems to update the minute at the 
correct time, to within a tenth of a second or so. But that's just by 
comparing with my radio-controlled wristwatch (WWVB receiver).
> ----- 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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-- 
James Maynard
Salem, Oregon, USA