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<p>With the GPS rollover coming up in April, it would be useful to
know what sources are vulnerable - or what firmware revision is
required to avoid the issue.</p>
<p>The Garmin gps18-LVC is frequently mentioned on this list. Has
anyone gotten a credible answer from Garmin? I have one of these,
but haven't gotten to the right person @garmin...</p>
<p>It would be a good idea if people with knowledge of other
gps-based timing sources shared their info too.</p>
<p>(Yes, technically not a PPS issue - but PPS is often used with
NTP, where the NEMA messages provide time in addition to the PPS
pulse.)</p>
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