Re: [IRCA] Noisy cable TV

["Rene Tetro" <rene@xxxxxxxx>]

It almost sounds like the cable feed is leaky somewhere and emitting 
extraneous noise that is most likely either their Internet feed or control 
signals (for addressable cable boxes, pay-per-view,etc).  Both of those 
operate on very low frequencies that often include MW and LW on many CATV 
systems.  Or it could be a bad repeater/amplifier on the cable trunk in your 
neighborhood.

If it's strong enough to disturb your DSL, that's pretty bad.  I would 
recommend that the CATV Technician disconnect the cable feed at the pole and 
see if the noise goes away.  Then check your DSL to see if it's working.  If 
everything seems normal, have him reconnect the cable and see if the problem 
returns.  If it does, you will have then proven that the interference is a 
Cable TV problem.

My guess is a noisy amp in the neighborhood whose signal level is so strong 
that it blasts through the cable.  Why it would only happen during the day 
is anybody's guess.  Given that you're in Florida, it could be that 
something in the CATV system nearby is heating up during the day and causes 
the noise.  At night, when things cool off and there is no direct sunlight 
on the pole, the noisy device could go back to normal.  That's all I can 
think of for the day/night difference.

Good luck,
Rene'

Rene F. Tetro
Chief Engineer
Salem Communications - Philadelphia
WNTP-AM / WFIL-AM
117 Ridge Pike
Lafayette Hill, PA  19444
Phone:  610-828-6965  Ext. 41
Fax:  610-828-8879
Email: rtetro@xxxxxxxxx

"Blessed are the peacemakers for they shall be called the children of God." 
(Matthew 5)
----- Original Message ----- 
From: "W. Curt Deegan" <WWWR@xxxxxxxxxxxxx>
To: "IRCA List" <irca@xxxxxxxxxxxxxxxx>
Sent: Monday, October 02, 2006 3:31 PM
Subject: [IRCA] Noisy cable TV


> For some time I've had two problems that now seem to come together.  I 
> have
> had a lot of trouble with DSL ever since I switched to it a month or so
> ago.  I have also had periods of serious noise covering at least the lower
> half of the AM band and below.
>
> The last few days the noise has been very bad and my DSL has been
> completely out.  I walked around with a pocket radio and found a huge load
> of noise coming from the cable TV lead.  Since the cable, telephone (and
> DSL), and power all converge on the same place at the back of the house, I
> went around to where the cable TV was away from the rest of the utilities
> and the noise is on it.
>
> I have called the cable company and a technician is supposed to come out 
> in
> a couple days.  I have less than great confidence that my problem will be
> solved, but must start somewhere.
>
> My question is, has anyone else had extreme interference from the cable TV
> radiating noise -- not the TV, the cable?  Has anyone had DSL failures
> induced by extremely noisy conditions?  Does anyone have any suggestions
> what I might do to help the cable rep investigate the problem?  Any
> thoughts regarding extended DSL outages -- it is from Earthlink but
> delivered by Bell South?  Anything at all?
>
> At the moment I'm lucky to hear anything that isn't local on MW, and
> nothing much at all on LW.
>
> One strange thing, the noise seems to disappear at night.  I placed the
> radio next to the cable TV lead last night when my DSL came back on and 
> the
> noise was gone -- one reason I called the cable company today.  And 
> another
> point to ponder, cable TV reception is fine, albeit the only reception 
> that is.
>
> Thanks for any thoughts.
>
>
> Curt
> -------
> W. Curt Deegan
> Boca Raton, (southeast) Florida
>
>
> _______________________________________________
> IRCA mailing list
> IRCA@xxxxxxxxxxxxxxxx
> http://arizona.hard-core-dx.com/mailman/listinfo/irca
>
> Opinions expressed in messages on this mailing list are those of the 
> original contributors and do not necessarily reflect the opinion of the 
> IRCA, its editors, publishing staff, or officers
>
> For more information: http://www.ircaonline.org
>
> To Post a message: irca@xxxxxxxxxxxxxxxx
>
>
>
> 

_______________________________________________
IRCA mailing list
IRCA@xxxxxxxxxxxxxxxx
http://arizona.hard-core-dx.com/mailman/listinfo/irca

Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers

For more information: http://www.ircaonline.org

To Post a message: irca@xxxxxxxxxxxxxxxx