[mythtv-users] Coax splitters - how painful are they?
Jay R. Ashworth
jra at baylink.com
Wed Sep 26 00:29:07 UTC 2007
On Tue, Sep 25, 2007 at 04:11:29PM -0600, Brian Wood wrote:
> In case some folks have missed it, a perfect two-way split with no
> device losses would be a 3db. "loss" to each leg.
Assuming that both ports are correctly terminated into a clean 75 ohms.
> Actually nothing would
> be "lost" as all the power would be accounted for. In other words: If I
> have a cable with +30dbmv. comoing out of it, and I take away half of
> the signal power, I will then have +27dbmv., NOT +15dbmv.
Yep; decibal scales are logarithms.
Jay R. Ashworth Baylink jra at baylink.com
Designer The Things I Think RFC 2100
Ashworth & Associates http://baylink.pitas.com '87 e24
St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274
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