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Jeff Liebermann Jeff Liebermann is offline
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Default Increasing Cable TV signal strength

On Thu, 9 Feb 2012 08:14:31 +0000, Ian Jackson
wrote:

In message , Jeff Liebermann
writes
Something is wrong. The nominal signal from the cable drop is suppose
to be 0dBm. If there's a splitter involved, they like to crank it up
to about 10dBm.


Careful! Don't get your dBm mixed up with your dBmV. There's around 48dB
difference! 0dBm is a massive 48dBmV. That would certainly make most
set-top boxes wake up and pay attention!


Oops. All my mentions of dBm should be dBmV. Thanks.

Range of acceptable signal levels. They're similar for DTV.
http://www.dslreports.com/faq/16085

How to check signal levels with a Motorola set top box:
http://www.ehow.com/how_12186368_check-signal-strength-comcast-digital-cable-motorola.html

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