Quote:
Originally Posted by elgemcdlf
I would have thought the smaller dish = less signal trap = less room for error correction = need as much of the trapped signal to be actual good signal.
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I don't think I understand what you are trying to say here.
But the way I look at it, for you to be able to lock a weak transponder, you have to have a certain quality level, which one way or another will relate to your signal AFTER error correction has occurred. Ie, you can have lots of errors in the signal, but if they are corrected, you can still view the video. When you have a weak signal, due to a small dish, or a signal with interferrance from adjacent sats, you will have a lot of errors. When you have a high FEC ratio, like 7/8, then your receiver isn't able to correct all these errors, and your odds of being able to lock the transponder will be decreased. But if you have a low FEC ratio, like 1/2, then more of the signal is devoted to error correction, and your odds of being able to lock the transponder and have viewable video are improved. At least that's my understanding. Hard to prove it one way or another from examples, because it's hard to eliminate other parameters like interferrance from adjacent sats, differences in signal strength, bandwidth, etc.