With the USRP, I can see the NOAAPORT spectrum display
How much of the spectrum display can you see Jerry?
I will agree with B.J., That is well put on the S/Q .
When I aimed my dish I went by the quality info to determine best S/N + using the skystar2 card it beeps faster when your quality get better. Using a pair of old archer space patrol radios I can aim the dish myself.
I seem to be getting a better understanding of what your asking here Jerry.
I can't explain why your quality bar dropped so much.
But I can say that a week ago here my quality shot up to 80% for a hour or two when it normally runs around 60% mabie 65%
I watched your website today and seen perfect data (imgs) on the site but then, it was like something came in and messed up the reception.
QUESTION
When does the twinhan lose lock and is it at certain times or random?
Now some of the errors I saw on your system I also seen on mine, but when it came to losing complete parts of imgs. that problem I didn't see here.
I don't think you have a quality problem from what I've seen, what you have said.
You have a RFI problem.
You have seemed to eliminate the possibility of co channel interference already.
Coming back to the first question.
If you have something interfering (inband) you should be able to see it with the USRP from what you have said. Though I know nothing about USRP's
I do know with my Hp141t Analyzer I saw what was causing my problem, and it stood out like a sore thumb. I have pics if anybody is interested to see.
And it was turned off as fast as it was turned on. It even messed up or wiped out UCTV.
Part of it was right on top of NOAAPORT, and it would cause my twinhan to unlock and my quality to jump around and drop.
As I mentioned before this interference would come and go at certain time periods.
If it is a radar, not much can be done.
I also noticed on your website that you have a picture of your setup. Considering the prox. of those powerlines, have you looked into powerline interference?
Depending on how strong that would be...it can cause issues too.
Tim