[time-nuts] adafruit $40 GPS

[Chris Albertson]

OK, not useless, just an order of magnitude worse than something that
cost less than 1/2 the price.  But you are right that many people only
care about hundredths of seconds.

The main problem with the nav receivers is they don't do a self survey
so there is some position uncertainty.   But that only applies if you
care about nanoseconds.

On Tue, May 14, 2013 at 12:48 PM, Bert, VE2ZAZ <ve2zaz at yahoo.ca> wrote:
> Why should a navigation GPS be useless for timing? A lot of people use Oncore GT+ GPS's with satisfactory results. In the end, it all depends on the performance you expect from your system...
>
> Regards,
>
> Bert, VE2ZAZ
>
> ------------------------------------------------------------
> Date: Tue, 14 May 2013 09:02:17 -0700
> From: Chris Albertson <albertson.chris at gmail.com>
> To: Discussion of precise time and frequency measurement
>     <time-nuts at febo.com>
> Subject: Re: [time-nuts] adafruit $40 GPS
> Message-ID:
>     <CABbxVHuo5uPb7OXj7bbrvcuZWdxZm9GExngS90N9N2iC3DUGgQ at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> The adafruit GPS has a built in antenna.  But you can add an external one.
>
> But why use this for timing?  They don't even give a spec for timing
> accuracy and it is likely NOT a timing GPS.  It is  a navigation unit.
> Pretty much useless for timing.
>
> Also the price is to high.  You can do better in eBay, real timing
> units sell for as little as $15.
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-- 

Chris Albertson
Redondo Beach, California