[mythtv-users] Coax splitters - how painful are they?

Jay R. Ashworth jra at baylink.com
Tue Sep 25 19:12:15 UTC 2007

On Tue, Sep 25, 2007 at 08:01:41AM -0600, Brian Wood wrote:
> A "perfect" two-way splitter would have 3db. loss. Since nothing is
> perfect in this world, most splitters actually lose 3.5db. per leg for a
> two-way split, and 7db. for a four-way.

The Ideal 1GHz 4-port I just installed says 7.4db.

> Note that a dual tuner has to have a splitting device in it to feed both
> tuners, so you are really asking whether it is better to have the
> splitter inside or outside your computer case. Since the splitter on the
> dual-tuner card was probably chosen to be as small and cheap as
> possible, it's probably better to use an external split.
> (I think some dual-tuner cards have what they call an LNA (low-noise
> amplifier) to make up the split loss, I suspect that the term
> "low-noise" is used pretty loosely in this case, a true LNA would cost
> more than the card.

Yeah, I know; right?

-- jra
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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