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Originally Posted by SuperHans
Yeh upstreams very good. Anywhere between 42 - 59. Higher the better. Also depends on what region he is in. it varies from region to region. You are right they may have changed it since the NTL buy out, but in my day those where the levels I worked to and I wouldnt have rolled out a tech for that.
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Are you insane?
The DOCSIS specs say 58dBmV, for QPSK, 55dBmV for 16QAM. Those are absolute max.
Higher certainly isn't better, 42 is no worse than 52.
Not sure what you're doing now but hope it isn't cable modem support. Read
http://www.cablemodem.com for specifications, then give it some safety margin and you'll realise how crazy that is.