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splitting cable signals....Speaking of AMPs
(Sasal Suzi) wrote in message ...
Just don't put the amp where there is little or no
signal or you
Speaking of amps .....
A couple of years ago we had 5 TV's and an amp, gemini I think.
We were eating dinner when we heard a loud beep, beep, beep
coming from outside. There was a Comcast cable truck outside.
The worker rang our bell. He said he detected an illegal condition
that needed to be resolved. If we refused, service would be stopped.
We let him in. He said that our amp was in violation and had to be
removed. We complied and he went away. The reason he gave was
that it interfered with aircraft, believe it or not. We never hooked it
back up. It was very scary to have somebody pull up outside and
"scan" our premisis. Makes you wonder what else they have.
When I worked for the FAA, I received pretty intensive training on
tracking down sources of RF interference. You would be amazed at what
odd stuff generates interference - even nonpowered things like a loose
metal crossarm brace on a wooden telephone pole. The most common
things though are items attached to TV's, especially amps. When we
found the home or business where the interference was coming from, we
were not allowed to take any action to correct the problem. Rather we
had to contact a third party -like the cable company, power company,
phone company, etc. Then they had to take action or face losing their
licenses. This sounds like what happened in your case.
As stated by other posters, the aircraft VHF frequencies are in the
115Mhz to 145Mhz range, just above the TV frequencies. But don't
forget about harmonic frequencies - the offending item could be at a
much lower frequency and the harmonic be in the aircraft band. And the
offending item does not have to put out enough power to reach an
aircraft. It only has to reach the ground antenna of the Air Traffic
Controller.
Enuf
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