[ntp:questions] Linux NTPd using a older Trimble Thunderbolt GPS Receiver

Paul tik-tok at bodosom.net
Sat Jan 17 02:05:35 UTC 2015


On Fri, Jan 16, 2015 at 7:49 PM, Oceanos Admin <sysadmin at cellmail.com>
wrote:

> Hi:
>
> We were looking to use an older Trimble Thunderbolt 8 channel GPS receiver
> for providing a Stratum 1 time reference
>


The standard hobbyist T-Bolt management program is Lady Heather.  It a
windows (dos) program that will run under Wine.  You can use it to
completely manage a T-Bolt.  It will also correctly initialize one.  The
Palisades driver has a bug that prevents correct set-up if you've managed
to get it misconfigured.

http://www.ke5fx.com/heather/readme.htm.

While message timing variability is much better than your typical GPS you
should use the PPS output via the ATOM/PPS refclock.

You'll probably get some advice to switch to simpler, more modern GPS
rather than an aging GPSDO.  They are a reasonable alternative if only for
reduced power consumption but given a standard serial port a T-Bolt is plug
and play.


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