I found the old rockwell jupiter gps boa ... / 2013-05-13

2013-05-13 I found the old rockwell jupiter gps boa ...
I found the old rockwell jupiter gps board which I had not used in years and hooked it up to the NTP server project system. I was used to this GPS taking ages to get a location fix and being very finicky about reception. Not this time: between hooking it up to the system and walking back to my laptop and checking the gps output with minicom it already had enough of a location fix to start sending PPS pulses. And next..
# ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*xxxxxxxxxxxxxxx .PPS.            1 u    1   16    7   15.570   -6.927   9.294
 xxxxxxxxxxxxxxx .INIT.          16 u    -   64    0    0.000    0.000   0.000
 chime1.surfnet. 194.171.167.130  2 u   35   64    1   18.643   -7.491   0.000
 chime2.surfnet. .GPS.            1 u   34   64    1   19.214   -6.526   0.000
oPPS(0)          .PPS.            0 l    1   16    3    0.000   15.431   1.227

Update: But the situation isn't ideal, the PPS is voted falseticker after a while. Looking at the NMEA data, specifically the $GPRMC messages I notice there is no fix at all, but the PPS indicator (carrier detect) keeps ticking so minicom keeps switching between 'Online' and 'Offline'. At least this means all the bits are working.

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