Another Car Radio static question
 

I drive the same route everyday. On the same 1.5 mile section I get a very
loud buzz and on top of the buzz a higher pitched periodic hum lasting for
10 seconds and occurring every 30 seconds overpowering everything on the low
end of the am band. There is a 3-phase distribution line along the road,
would a failing insulator create this type of problem, I thought that would
be more localized than covering a 1.5 mile stretch. Along this 1.5 miles I
travel 3 different directions and the intensity doesn't change much and it
doesn't make any difference what time of night or day. Near one end of this
area, there is a transmission tower of some type. The tower has been there
long before cell phone towers started sprouting like weeds, also it doesn't
have the dish array near the top just a straight tower, probably 15' sq. at
the base and 75' tall.

Is the person or company responsible for creating this type of interference
obligated to correct the cause?

Another Car Radio static question
 

Jeff Dieterle wrote:
"Is the person or company responsible for creating this type of
interference obliged to correct the cause?"

Maybe. I doubt that leaky insulator noise generates the interference
described. It would not likely last for only 10 seconds with a 30-second
repetition rate.

Such an interference with different duration and repetition from Jeff`s
used to plague my company at Houma, Louisiana. Our offshore division for
the Gulf of Mexico was stationed at the Houma Airport. It turned out to
be caused by the U.S. Government`s radar. Every time it swept our way,
it broke the noise-squelch we used on our FM receivers, giving them a
click and a buzz. We all wanted to fly safely so we never complained.

Best regards, Richard Harrison, KB5WZI

Another Car Radio static question
 

In article ,
Jeff Dieterle wrote:

Is the person or company responsible for creating this type of interference
obligated to correct the cause?

It depends.

If they're radiating RF in excess of FCC part 15 limits, and do not
have a license to transmit in whatever frequency band they are using,
then they're very probably obligated to fix the problem or to shut
down whatever equipment is radiating.

If they're transmitting in a frequency band / allocation for which
they have a proper license, and if their transmission isn't leaking
spurious frequencies in excess of the FCC limits, then they're
probably quite legal. In this situation, what you'd hearing would be
considered to be "undesired reception" - that is, your car radio is
being overwhelmed by a strong signal outside of its normal passband -
and the FCC would consider this the fault of your radio.

Without doing some spectrum analysis and direction finding it's hard
to distinguish the two from the symptoms you report.

--
Dave Platt AE6EO
Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!

Another Car Radio static question
 

On Thu, 09 Feb 2006 19:30:36 -0000, (Dave Platt)
wrote:

In article ,
Jeff Dieterle wrote:

Is the person or company responsible for creating this type of interference
obligated to correct the cause?

It depends.

If they're radiating RF in excess of FCC part 15 limits, and do not
have a license to transmit in whatever frequency band they are using,
then they're very probably obligated to fix the problem or to shut
down whatever equipment is radiating.

Though if they call it BPL, they will probably get a free ride!

Owen
--

Another Car Radio static question
 

On Fri, 10 Feb 2006 00:32:54 GMT, Owen Duffy wrote:

Though if they call it BPL, they will probably get a free ride!

lasting for 10 seconds and occurring every 30 seconds

Hi Owen,

Then that BPL service has a through-put of 2b/Minute or T-0.00000001?

73's
Richard Clark, KB7QHC

Another Car Radio static question
 

I've noticed something else on this problem, below the 3-phase electrical
conductors, there is either a telephone or catv wire. The intense periods
occur when I drive by some type of device that loops this cable in to a pear
shaped configuration. I guess it's not a periodic sound but appears that way
because they are evenly spaced and I drive the same speed.
Maybe if anyone is still following this thread and that sheds anymore light
they'll respond.
"Dave Platt" wrote in message
...
In article ,
Jeff Dieterle wrote:

Is the person or company responsible for creating this type of
interference
obligated to correct the cause?

It depends.

If they're radiating RF in excess of FCC part 15 limits, and do not
have a license to transmit in whatever frequency band they are using,
then they're very probably obligated to fix the problem or to shut
down whatever equipment is radiating.

If they're transmitting in a frequency band / allocation for which
they have a proper license, and if their transmission isn't leaking
spurious frequencies in excess of the FCC limits, then they're
probably quite legal. In this situation, what you'd hearing would be
considered to be "undesired reception" - that is, your car radio is
being overwhelmed by a strong signal outside of its normal passband -
and the FCC would consider this the fault of your radio.

Without doing some spectrum analysis and direction finding it's hard
to distinguish the two from the symptoms you report.

--
Dave Platt AE6EO
Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!