[RFI] U-Verse problem update

[Jeff AC0C]

In my case, the fiber only comes to the junction on the street.  It's copper all the way from there.  Anything over about 25W in my 
case was enough to cause the connection to fail.  And we had about half the annual output of Fairrite's goodies put on every 
connection point, run and wire they could find.

Here's the funny part - it was decided by ATT that this was not really a classic signal overload case here - it was a side effect of 
the way the firmware implementation was done.

Apparently the uverse box in the house - when it starts up - scans the band and excludes communication where it does not have a good 
SNR with the mother ship.  That's why things like local BC stations don't affect the box - even though it's baseband signal runs 
right through the BC band.  Good so far...

However, the modem only does this at excluding action at initialization.  If it encounters an interference after startup (like my CW 
or RTTY transmission), the box cycles in a reboot operation in an attempt to clear the problem.  But rather than understanding that 
some signals are intermittent - and just excluding and trying the band at some time later - it continues to cycle in this restart 
loop until my signal goes away!

73, Jeff ACØC
www.ac0c.com

-----Original Message----- 
From: Peter Laws
Sent: Tuesday, February 15, 2011 3:28 PM
To: rfi at contesting.com
Subject: Re: [RFI] U-Verse problem update

On Tue, Feb 15, 2011 at 15:18, Joe <wa6rkn at gmail.com> wrote:
> What bothers me about this is that U-verse in not conducted by copper
> cabling..it is all optical fibre...how is an RF signal getting in and being
> carried by fibre?


Not all U-Verse installs are FTTH - your friend is lucky.  Many are
FTTN with copper from there.

-- 
Peter Laws | N5UWY | plaws plaws net | Travel by Train!
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