Hi Gilbert,
re:
>http://noaaport.admin.niu.edu:8025
>
>That's as ugly as I've ever seen it, except when I was picking it up initially
>as a test on a 3 meter dish 3 years ago. Must be my dish, right?
The viterbi bit error rates look awfully high alright...
re:
>http://www.opennoaaport.net:8025
These look even worse.
re:
>An EbnO of 6.5 dropping to 5.9 every great once in a while? If
>this keeps up, you'll need a 20 meter SETI dish to pick the
>broadcast up. What's going on?
The indicated bit error rate off of our Novra S200 looks very good:
CMCS 192.168.1.20> show satellite
Satellite Interface Settings:
Receiver MAC Address: 00-06-76-04-00-87
Receiver Mode: DVBS
Frequency: 1193.0 MHz
Symbol Rate: 6.348 Msps
Viterbi Rate: 7/8 QPSK
Signal Lock: On
Data Lock: On
Uncorrectable Rate: 0/Second
Viterbi Bit Error Rate: 0.0000e+00
Carrier to Noise C/N: 11.4dB
Signal Strength: -31 dBm
re:
>Yes, I'm still getting all the packets. But 1 x 10 ^ -6 is below NWS reception
>standards, and yet, I am using a 3.7 meter dish with a better LNB than the NWS
>is! The NWS standard is an EbnO "above 6". But this close to 6?
When we were using the Novra S75 (not the S75+), we noted the need to
reset the device from time to time. The symptoms for a reset being
needed were the combination of one or more of the following:
- non-zero viterbi bit error rates
- frequency of the lock being markedly different than 1193.5
- unusually _high_ indicated signal strength (e.g., >80)
What happens to your stats after an S75+ reset?
Cheers,
Tom
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