"DES" wrote in message
...
On Aug 19, 6:51 pm, John Smith wrote:
DES wrote:
Bad picture, but can someone tell me if the antenna on top of the
tower is for a Ham or CB radio? (I know the one on the left is a EV
ant

http://i126.photobucket.com/albums/p...e/IM002446.jpg

Better question, are you receiving your TV from rabbit ears, external
(outside antenna), cable, satellite, internet, etc? -- which one(s?)

Regards,
JS

Cable. And the house was completely rewired inside and out about 4
yrs ago.

Just had the cable company out here last week, and they said there was
nothing they could do because everything was in working order.

----------

While there are exceptions to the rule, generally cable installers are not
electronics savvy. Installing cable does not require any education in
electronics. That is why most cable companies subcontract their installation
work to independent folks. They don't want to have to pay qualified
electronics people at positions other than the head end.

So, don't think that the cable guys have the final word on your situation.
Being a home theater enthusiast, it will be good for your system's
performance for you to become proactive and learn some electronics. No one
will care for your system as well as you will.

Ed, NM2K

DES wrote:

...
Cable. And the house was completely rewired inside and out about 4
yrs ago.

Just had the cable company out here last week, and they said there was
nothing they could do because everything was in working order.


I have had interference from neighbors with CB units. I have had RFI
from my own equipment--mostly with my VHF xmitters and old coaxial tank
circuits. In every case of mine, going to a cable company completely
removed all RFI ...

Still, I wonder about a stub trap/filter made out of coax, on a
tee-fitting and the length pruned to rid the offending freq(s.) I have
only done such a thing in the past when I was using twin-lead and was
able to construct a trap for an offending VHF freq out of two ~8 inch
lengths of twin-lead with a variable cap the ends of the
twin-lead/8-inch sections (other two ends of these were shorted to form
series loops with the twin-lead sections.)

I have never had to duplicate the above with coax ... but I am sure
someone here has played with such enough to be an expert ... other than
that, I would have little experience to offer ...

If the signal is coming across the ac power, perhaps a "brute force
filter", but I haven't seen one of those to purchase in ages. The
internet or hams here may have construction details ...

Regards,
JS

DES wrote:

Cable. And the house was completely rewired inside and out about 4
yrs ago.

Just had the cable company out here last week, and they said there was
nothing they could do because everything was in working order.

Did things get better or worse when they did? It's simple to test,
just DISCONNECT the cable from your TV's and stereo and see what happens.
Make sure to unplug any cable boxes you have from the wall, because they
may be picking up the signal and leaking it into the power lines (rare
but not impossible).


No strange voices from them, wiggly pictures, etc, then it's likley a
cable problem.

Cable systems can have bad grounds, poorly installed connectors, improperly
sheilded amplifiers and so on too. As someone else said the cable company's
subcontractors are not always able to tell if anything is wrong with the
instalation or the equipment.

BTW. do you have a cable modem for the Internet? I'm guessing their is
a common thing here, and it's the cable system.

Geoff.


--
Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM

DES wrote:
Bad picture, but can someone tell me if the antenna on top of the
tower is for a Ham or CB radio? (I know the one on the left is a EV
ant

http://i126.photobucket.com/albums/p...e/IM002446.jpg


Oh yeah, almost forgot, you are using coax? Right?

Regards,
JS

DES wrote:
Bad picture, but can someone tell me if the antenna on top of the
tower is for a Ham or CB radio? (I know the one on the left is a EV
ant

http://i126.photobucket.com/albums/p...e/IM002446.jpg


If the offending freq(s) is/are in the CB band (and EVEN if he is
running a PA/linear), how about a trap filter to remove them (the
freq(s)) and prevent them from overloading the front end of your set(s?)

Regards,
JS