As you know, the NWS has had a lot of trouble with lost NOAAport packets.
I spent over 2 hours today turning on a backup NOAAport ingester...a
Pentium 4 running Centos 5.4...put into storage, in the event I needed
it in an emergency. What I found was that with it's slow processor, a 100
mb network card, that I was losing the same amount of data. Upgrading it
to CentOS 5.6 didn't solve it. And, I was seeing the same packet loss on
both my old and new machines. So, I concluded my problem was:
The NOAAport ingest software;
Weak reception, in spite of a carrier-to-noise (C/N) of ~13, well above
the "magic number" of 9 needed for perfect reception
Terrestrial Interference (TI)
And then, after an inquiry I made on the NOAAport Yahoo! Users Group
asking people if they were still having reception problems, Jose Nieves
posted that I should look at this...
http://www.opennoaaport.net/dvb-s2/
UNIDATA's been notified. Thank you, Jose, as I couldn't have done that
here! That pretty much narrows it down. :-)
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Gilbert Sebenste ********
(My opinions only!) ******
Staff Meteorologist, Northern Illinois University ****
E-mail: sebenste@xxxxxxxxxxxxxxxxxxxxx ***
web: http://weather.admin.niu.edu **
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