[BC] Satellite Inet issues

[Broadcast List USER]

Well, yes and no.  You cannot just say we have a run of 24000 feet so  
we can provide 3 Mb/s.  There is more to it than than.

First is the capacitance inside the cable, both to the other  
conductor, and to OTHER conductors in other circuits.  The higher the  
capacitance, the more the high end is rolled off, and the slower the  
data, as the ones and zeros have to complete themselves.

Also, the gauge of the wire really makes a difference.  Telcos,  
especially in rural areas and along trunks can end up using some  
pretty darned small gauge wire.  28 gauge solid copper is not rare at  
all.  The smaller the gauge, the higher the resistance, and the higher  
the resistance, the larger the loss.

Also, telcos don't always want to fix damaged outside plant (the wire  
and such).  This is especially true in rural areas, where they cannot  
recover the costs.  They just derate the "facilities" and take that  
into account when they "engineer" new services, both digital and POTS.

It is interesting that for higher cost circuits, like T-1s and above,  
they will try to match up pairs, and "bond" them to lower the  
resistance.

There is a LOT more to it than I am willing to write, or even than I  
know, but the simple answer is you cannot just put a distance on the  
facility and say it will work at this rate.

--chip

On Oct 18, 2009, at 9:00 AM, broadcast-request at radiolists.net wrote:

> Message: 6
> From: "Dana  Puopolo" <dpuopolo at usa.net>
>
> Don't let the telcos B.S, you. With Adrenaline, they can give you  
> 1.5 meg DSL
> out to  28,000 feet from the C.O., and 3.0 Meg to over 24,000 feet.
>
> Even without it, I had reliable 1.5 meg DSL past 17,000 feet. All  
> they had to
> do was remove the bridged taps from the line. One clue-some modems  
> work better
> at these distances then others. I've always found the Westells to  
> work the
> best at long distances.
>
> http://www.charlesindustries.com/main/adrenaline.html
>
> -D