[ntp:questions] Re: PPS from TrueTime 468-DC GOES Time Receiver (with GPS antenna)
simonpg
paul at thesimonet.org
Fri Aug 25 21:03:56 UTC 2006
Thank you for your response! My comments are interspersed below.
John Ackermann N8UR wrote:
> simonpg wrote:
> > So I have this fine receiver and have been a member of pool.ntp.org for
> > several years. But I would like to take advantage of the PPS signal.
> > The downside is that I have no idea where to start. The upside is that
> > I can solder and read a simple schematic diagram. Any ideas?
>
> GOES was a time service received from a handful of weather satellites;
> while the antenna looks GPS-like, it's not a GPS. Unfortunately, the
> GOES time service was turned off a while (maybe 18 months?) ago. While
> there are sporadic reports of people receiving time from the satellites,
> there is no traceability and any results are totally untrustworthy.
>
> So, a neat box has turned into a paperweight...
>
It would have had Truetime not come out with a replacement antenna that
does a GPS to GOES conversion:
ntpq> peer
remote refid st t when poll reach delay offset
jitter
==============================================================================
*TRUETIME(0) .TRUE. 0 l 50 64 377 0.000 2.831
1.619
-clepsydra.dec.c .GPS. 1 u 158 1024 377 56.722 17.000
0.222
+clock.xmission. .GPS. 1 u 220 1024 377 79.953 14.986
0.955
-bigben.cac.wash .USNO. 1 u 210 1024 377 42.859 15.810
0.323
-time-nw.nist.go .ACTS. 1 u 222 1024 377 36.091 21.114
1.429
+clock.sjc.he.ne .CDMA. 1 u 161 1024 377 53.454 15.612
0.382
LOCAL(0) .LOCL. 10 l 2 64 377 0.000 0.000
0.004
So it should still be a neat box.
> John
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