[ntp:questions] GPS clock for Linux

Hal Murray hal-usenet at ip-64-139-1-69.sjc.megapath.net
Fri Sep 12 20:42:38 UTC 2008

In article <ko8qp5-po8.ln1 at klein-habertwedt.de>,
 Uwe Klein <uwe_klein_habertwedt at t-online.de> writes:
>Hal Murray wrote:
>>   There are a lot of low cost USB GPS gizmos that use the
>> SiRF Star III.  They suck for timekeeping.
>Is there a reason known for this?

I assume it's a software bug/feature.  The problem is drift/wander
in the offset.  The offset changes too slowly for normal
jitter filters to work on it.

I forgot to mention another problem with those chipsets.
They have a leap second bug.

These are my opinions, not necessarily my employer's.  I hate spam.

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