beww at beww.org
Thu Jan 14 18:28:54 UTC 2010
On Thursday 14 January 2010 11:13:08 am Ben Kamen wrote:
> On 1/14/2010 12:02 PM, David Brodbeck wrote:
> > On Thu, January 14, 2010 7:14 am, Greg Oliver wrote:
> >> I am just wondering how the same cable connected to a TV produced
> >> different results when connected to the hdhomerun.. I can only assume
> >> the TV has pretty good gain or something???
> > Yeah, it's possible the TV's tuner is more sensitive.
> Ehhh, TV tuners are of wide quality. When it comes to your TV, they're just
> as interested in saving $0.02.
> Of course, you could test this if you have a sig meter somehow on both
> inputs for a given channel.
> Keep in mind, when you split the signal, you lose about 3.5dB per split.
> So if you have -10dBmV coming in and put it through a 2 way splitter, you
> now have -13.5dBmV coming out the 2 ports.
> The 3 output splitter on my house for CATV has
> Input ---> 3.5dB loss
> |-> 7dB loss
> \-> 7dB loss
> And so on. So your test environment could affect your reception quality as
The 3db. is the theoretical loss from a 2-way split (dividing the available
power in half). The extra .5db. loss is because the splitter is not perfect
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