[time-nuts] GPS dropouts and crystals

Neon John jgd at johngsbbq.com
Sat Sep 9 15:35:53 EDT 2006

On Thu, 7 Sep 2006 11:20:14 -0700, "Randy Warner"
<Randy at synergy-gps.com> wrote:

>I would tend to believe the problem you are having is more receiver
>related. If your entire satellite display is going red it means you are
>losing all the SV's at once. While it's true that there are some pretty
>big holes in the system right now, you shouldn't just lose everything at
>The problem could be anything from a bad antenna to a receiver problem.
>Working with GPS receivers for the last 10 years I have seen many cases
>of the receiver just dumping everything. It usually comes down to an
>antenna connection problem or a crystal/TCXO problem in the receiver. 

Thanks for the info.  I kinda thought this might be in the receiver
but since the subject of GPS outage came up I thought I'd ask.  This
unit is one of those little dongle units that is powered by the USB
bus and uses the SiRF chip set.  I have noticed more stationary
scatter than with my better receivers so I've suspected the crystal
clock from the beginning.

John De Armond
See my website for my current email address
Cleveland, Occupied TN
Don't let your schooling interfere with your education-Mark Twain

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