Re: Home ethernet

On 03/13/2011 11:51 AM, Larry Garfield wrote:
> Thanks, everyone.
> 
> As it turns out, my contractor goofed and went ahead and installed wiring even 
> though I'd not authorized it yet.  I'm trying to assess just how badly he 
> screwed up. :-/  Right now, all of the spots I'd indicated (1-2 per room) have 
> an ethernet cable of unknown grade and a coax line running to them.  (I'd 
> asked for an estimate on running one vs. two ethernet lines only.)  I don't 
> think they ran conduit, but I am checking.

Well, that's not good. Most contractors don't know the difference
between UTP categories...

> 
> - Is there a crosstalk problem running coax and UTP that closely together in 
> parallel?  I know you can't do that for electrical lines, but I don't know 
> about UTP and coax.

No - crosstalk shouldn't be a problem. I have put in large installs with
UTP and coax with no problems.

> 
> - Why, exactly, is everyone so big on coax? :-)  I've never used it for 
> anything other than cable TV or cable-to-modem service.  Ethernet strikes me 
> as far more useful, so I am at a loss for why the contractor just assumed I 
> wanted coax jacks coming out my ears, or why Ian below is suggesting a 2-coax 
> plate.  Does coax have some use that I don't know of?  My inclination would be 
> single coax to a room and then multiple ethernet jacks all over the place, not 
> vice versa.
>

It's a standard thing in the residential LV world. Personally, I hate
dealing with coax - it's bulky, ugly, has limited bw, and terminates
poorly. Unless you are going to have multiple antenna feeds -- ie.
off-air + c-band or k-band dish -- or multiple tuner feeds you don't
need more then one drop -- especially since you can always add an
external combiner or splitter.


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