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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
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. :-)
******************************************************************************* Gilbert Sebenste ******** (My opinions only!) ****** Staff Meteorologist, Northern Illinois University **** E-mail: sebenste@xxxxxxxxxxxxxxxxxxxxx *** web: http://weather.admin.niu.edu ** *******************************************************************************
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