On Mon, 18 Apr 2011, Gilbert Sebenste wrote:
For those of you who have S-300's and your PID's have been set, here's the
commands you'll need to type at the CMCS prompt, after you have logged in:
mode DVB-S2
frequency 1141.85
symbolrate 15.120
isi on
set isi 13
If you haven't set your PID's, then you need to add them. From the cmcs
command prompt, type:
add pid 101
add pid 102
add pid 103
add pid 104
add pid 105
Although this is apparently optional, you should also type in:
modcod 2/3 8PSK
That sets the modulation coding. The Novra apparently
finds it automatically, but if you're paranoid, that's what
it should be set at. Note: an 8PSK broadcast is a change the
NWS made. It's harder to receive an 8PSK broadcast reliably...
just ask any Fox TV broadcast engineer here in the U.S.
Anyway, now you should see, when you type "show satellite"
on the CMCS prompt:
CMCS XXX.XXX.XXX.XXX> show satellite
Satellite Interface Settings:
Receiver MAC Address: xx-xx-xx-xx-xx-xx
Receiver Mode: DVBS2
Frequency: 1142.0 MHz
Symbol Rate: 15.120 Msps
ModCod: 2/3 8PSK
Gold code: 0
Input Stream Filter: On
Input Stream ID: 13
Signal Lock: On
Data Lock: On
Uncorrectable Rate: 0/Second
Packet Error Rate: 0.0000e+00
Carrier to Noise C/N: 13.9dB
Signal Strength: -43 dBm
It didn't help with getting any better reception; the thick low
cloud deck has broken up, allowing for slightly better reception
than what I had this morning.
Having said all of THAT...
Over on the Yahoo! NOAAport users group, someone posted pictures
of a scope, and found the DVB-S2 broadcast to be at least 2-3 dB
under the current "legacy" broadcast.
*******************************************************************************
Gilbert Sebenste ********
(My opinions only!) ******
Staff Meteorologist, Northern Illinois University ****
E-mail: sebenste@xxxxxxxxxxxxxxxxxxxxx ***
web: http://weather.admin.niu.edu **
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