Hi, Jeff. As I stated, my area is related to mobile sites. I do not reside in
an area that is served by U-verse and subsequently have no personal experience
in dealing with any issues related to the service. I am not involved with that
product and know very little about it.
I have read, with interest, the threads here on RFI and other places where some
installations are clean (or have been made "clean") while others have rendered
HF operation to be a challenge.
tnx
Mike / W5JR
> On Oct 29, 2013, at 3:28 AM, "Jeff Blaine" <jeff@ac0c.com> wrote:
>
> What happens if we have a case where AT&T is the culprit (via radiation into
> ham bands from the Uverse's utilization of POTS wiring) blanketing much of
> the lower HF bands?
>
> 73/jeff/ac0c
> www.ac0c.com
> alpha-charlie-zero-charlie
>
> -----Original Message----- From: W5JR.Mike
> Sent: Tuesday, October 29, 2013 2:23 AM
> To: Dale
> Cc: rfi@contesting.com
> Subject: Re: [RFI] If you're ATT, you can do something about RFI...
>
> Hi, Dale and others. Many of these new industrial high efficiency lighting
> systems are generating significant broadband noises from near 650 MHz to
> close to 900 MHz. They fall under Part 18. They impact many licensed radio
> services, including Public Safety, both uplink and downlink. Fortunately, two
> of the manufacturers have acknowledged the problem and engineered a fix and
> are replacing hardware. A few issues remain, but the process has been pretty
> good. Some large national retail stores changed out their lighting and
> changed it out again.
>
> You can imagine how a building owner might react to getting a knock on the
> door letting them know their brand new (expensive) high efficiency lighting
> system is the source of interference to numerous licensed radios systems
> requiring them to disable it. The lighting often is either primary in
> building lighting or outdoor parking/security lighting. Not a good situation.
> Most owners are cooperative to seek a solution, a very small few are not.
>
> Disclaimer, I do indeed work for AT&T (Mobility side) and interference
> ingress and egress is one of the areas I am involved with. It's amazing the
> amount of broken (faulty) electronics we encounter every day. It seems like
> an unlimited supply.
>
> tnx
> Mike / W5JR
>
>> On Oct 29, 2013, at 12:45 AM, Dale <svetanoff@earthlink.net> wrote:
>>
>> Tom,
>>
>> I suspect that your post will generate several replies. Mine is as follows:
>>
>> 1. Amateur radio is also a LICENSED service. We CAN invoke the FCC, but
>> admittedly, it takes several more steps to get action than what AT&T had to
>> do in Houston. It should be noted that 705 MHz DOES fall within the range
>> of controlled emissions for Part 15 devices, whereas 3.5 MHz does not.
>>
>> 2. This case seems to be pretty much like the situation hams face when a
>> neighbor has a plasma TV or touch lamp or battery charger that are
>> incidental radiators and cause grief to radio systems. FCC may not do
>> anything about radiated interference on HF because of non-coverage under
>> Part 15, so you, the ham, then have the option of confronting the neighbor
>> directly about an offending device; the result is often similar to what the
>> defendant in this case is doing to AT&T. The difference is, of course,
>> he'll probably lose.
>>
>> 3. The one area in which FCC has gone to bat for hams has been with the
>> electric power companies when the interference can be shown to emanate from
>> distribution power lines and associated equipment. I have had two
>> situations, one in IL and the other here in IA, in which the local power
>> company was very helpful and even quick in fixing severe RFI problems that
>> were affecting me. I did not invoke FCC, but I think the power companies
>> were well aware of the sort of pressure or fines that can come from amateur
>> radio RFI complaints.
>>
>> 4. The situation here is not related to power distribution problems, and
>> neither are plasma TV or other consumer garbage RFI sources, so I suspect
>> that the fact that the light fixtures are putting out big sigs on 705 MHz is
>> a huge help for AT&T in getting action. Incidentally, it sure would be
>> interesting to learn just how devices made to operate at relatively low
>> frequencies can generate strong harmonics or spurs way up into the UHF range.
>>
>> 73, Dale
>> WA9ENA
>>
>>
>>
>>
>>
>>
>> -----Original Message-----
>>> From: K8TB <k8tb@bosscher.org>
>>> Sent: Oct 28, 2013 3:26 PM
>>> To: rfi@contesting.com
>>> Subject: [RFI] If you're ATT, you can do something about RFI...
>>>
>>> Interesting read...
>>>
>>> "http://transition.fcc.gov/Daily_Releases/Daily_Business/2013/db1028/DA-13-2077A1.pdf";
>>>
>>> But if it is on 75 meters?
>>>
>>> Tom K8TB
>>>
>>>
>>> _______________________________________________
>>> RFI mailing list
>>> RFI@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/rfi
>>
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