There's a sticky at the top of this section about cable modem signal levels:-
http://www.cableforum.co.uk/board/sh...ad.php?t=26006
Also Robin Walker's site is an excellent source of info about cable modems:-
http://homepage.ntlworld.com/robin.d...ps/signal.html
My DS power level is around -5.3dBmV, but my US power level is flat out at 61dBmV.