- To: noaaport@xxxxxxxxxxxxxxxx
- Subject: [noaaport] NOAAport signal update
- From: Gilbert Sebenste <sebenste@xxxxxxxxxxxxxxxxxxxxx>
- Date: Tue, 3 Aug 2010 01:05:00 -0500 (CDT)
In regards to that 1 dB drop in signal, the NWS Network Control Facility
(NCF) chimed in wwith the following.
The signal levels on the SBN have been "normal" since switching to the SES1 satellite. Since the Novra DVB receivers don't give us dB readings, we don't use it to adjust our uplink levels. We use receiver EbNo (>6) and gain (>1) to determine how the adequateness of the SBN signal at all NWS AWIPS sites. Since we don't use dB to measure receive, it's possible that there could be a 1 dB drop in signal strength, but long as the EbNo's and gains are at acceptable levels, there's no need to make any changes to the uplink power levels. Based on current site EbNo's and gains, the SBN power level is nominal.
---- ******************************************************************************* Gilbert Sebenste ******** (My opinions only!) ****** Staff Meteorologist, Northern Illinois University **** E-mail: sebenste@xxxxxxxxxxxxxxxxxxxxx *** web: http://weather.admin.niu.edu ** *******************************************************************************