I’ve been in touch with Inmarsat about the drop in performance and they have requested a much spring documentation as possible. They are not aware of any issues.
Please post all any links to data sets and plots here, with a description of time periods and location/satellite. I know there are several postings through our a few different threads, which I’ll try to round up later tonight. Feel free to overload this thread with data.
My receiver (Indoor at a window) is located near cologne in Germany
I will update the GoogleDrive Document every day and add the SNR logs from the past 24h. Updated the Document
The Signal is not stable and has a wave form to it. Sometimes it goes down for many hours and comes then back up to the normal wave like form.
I don’t know how helpful this might be, but SNRs and Rssi on Americas 98 W are stabler now than they used to be. This is a notional feel since I don’t record, but Americas used to fluctuate allot too. Ken
when my RSSI value goes up (from -114 to -112) the SNR should also go up. Doesent it? I get a higher SNR when my RSSi goes down sometimes. is that normal?
No, the RSSI value is the “signal and noise average level” while the SNR is the difference between
signal and noise. When signal and noise both go up/down the same amount, the SNR stays the same.
E.g. when you connect a cable between the LNA and the RTL stick, the RSSI will go down, but the
SNR remains the same. (unless the cable damping is so much that the noise figure of the RTL stick
becomes noticable)
He subido un csv y el txt al Drive enlazado más arriba, decir que el día 3 hubo mucho viento, que movió la antena, eso fue el causante de la perdida de señal de ese día.
translation:
I uploaded a csv and txt to the Drive linked above, say that on day 3 there was a lot of wind, which moved the antenna, that was the cause of the signal loss of that day.
Edit: I think the csv is not right, I can not create it well.
In the last 24h I had a massive increase in SNR for about 20h. The Receiver was not moved or even touched in this time.
As a note: My log is from 30.1.17 until now and will be updated roughly every 24h.