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Re: RG41 5: 4 upstream channels
Quote:
Originally Posted by Gobble
Yeah, I'm not sure on the reason that it does step down, just used power levels as an example. It might be something to do with noise as higher modulation presents more noise, but how you can visualise that from the router GUI I couldn't say.
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Higher modulations require a more noise free channel. If the noise is too great and the error rate commensurately higher then the modulation can step down. In the very worst case it'll drop to QPSK.
As the modulation drops to lower levels the amount of effective power increases and helps the SNR.
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