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[IDD #KUD-512290]: Backup NOAAPort source ?

Hi Rosie, Dave, Jerry, et. al.,

re:
> We think we may be out of the woods!

Sounds promising...

re:
> Dave's report:
> After reading Tom's latest email on the subject, I went up and looked at
> the coax cables and splitters. They are all in good condition, mostly
> new and this configuration is just from last fall. I don't believe we
> have a bad cable or connector. I then looked at the antenna controller
> and noticed that the polarity was not at the right place. Somehow it got
> moved and I had only looked at the azimuth and elevation before. When I
> rotated it back to the right place, the signal came up significantly. It
> hits the limit right there so I could reset the limits tomorrow if it
> looks like that would be wise.

Ah Ha!

re:
> I see in Tom's email that they were not able to get a good signal until
> they inserted a line amplifier. We don't have one of those and I can't
> believe we would need one, but it might be a thing to try as well. Let
> me know how the numbers look.

The line amp makes up for the long signal cable run in the setup here.
We learned that other NWS NOAAPort installations also have the same
line amp in place.  FYI, the amp being used here is a:

Norsat LA 30   Rev 01
950-2150 MHz, 75 ohms

This is purported to be a very high quality unit.

re:
> Our C/N is now up to ~14dB. Signal -27.

OK, now we're talking!

The effect of the increase in C/N can easily be seen in the plot of total
data volume being ingested and relayed in the IDD:

np1.ssec.wisc.edu:
http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/rtstats_summary_volume?np1.ssec.wisc.edu+GRAPH

np2.ssec.wisc.edu:
http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/rtstats_summary_volume?np2.ssec.wisc.edu+GRAPH

Also, a quick look at the log files for the nwstg channel shows that the last 
Gap message (which
indicates incomplete products) was seen at 20:48:38.

re:
> One thought is that the polarity may have not come back correctly after
> a power outage.

So, your setup has a polarity servo?  Interesting!

re:
> Thank you for all your input on what should be what and suggestions!

No worries.

re:
> Regards (and fingers crossed),

Well, I can definitely say that both np1 and np2 are processing just about
all of the products that are in the NOAAPort SBN.  Success!

Last comment for now:

- I would like to suggest that the NOAAPort stats gathering on both np1 and
  np2 be enhanced to save more than just the signal strength

  For reference, here are 5 minutes out of one of our NOAAPort ingest
  systems:

20160503.2050 DVBS2 1110.0 30.001 2/3_16APSK 0 On 18 On On 0/s 0.0000e+00 
16.3dB -30dBm   0.013 -100.955  173.35  43.51
20160503.2051 DVBS2 1110.0 30.001 2/3_16APSK 0 On 18 On On 0/s 0.0000e+00 
16.4dB -30dBm   0.013 -100.955  173.35  43.51
20160503.2052 DVBS2 1110.0 30.001 2/3_16APSK 0 On 18 On On 0/s 0.0000e+00 
16.7dB -30dBm   0.013 -100.954  173.35  43.51
20160503.2053 DVBS2 1110.0 30.001 2/3_16APSK 0 On 18 On On 0/s 0.0000e+00 
16.7dB -30dBm   0.013 -100.954  173.35  43.51
20160503.2054 DVBS2 1110.0 30.001 2/3_16APSK 0 On 18 On On 0/s 0.0000e+00 
16.4dB -30dBm   0.013 -100.954  173.35  43.51

  Included in our stats gathering are essentially all of the values that get 
listed
  by 'cmcs' with the 'show satellite' option.  The other items on each line are
  the indicated latitude, longitude, azimuth and elevation of the satellite as
  estimated by the nwyo.com web site (which I scrape once per minute).

  If you are interested in doing the same thing as we are doing, I would be 
happy
  to install our scripts on both np1 and np2.  Just so you know, we setup the 
same
  stats gathering on the NOAAPort ingest machine at LSU/SRCC.

Cheers,

Tom
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Ticket Details
===================
Ticket ID: KUD-512290
Department: Support NOAAPORT
Priority: Normal
Status: Closed