[RFI] RFI in the news

[Gary Smith]

A parallel experience: I am  retired railroad engineer with 42 years of 
service.  When remote control locomotives were first tried on the 
Southern Pacific rr in the late sixties-early seventies on the Roseville 
Ca, to Sparks Nv mountain distric run, the same overly educated type 
gave us the how to's such on the new and can't fail remote locos.

When I brought up in the open discussion session the possibility of 
intermod,  I was given the same dear in the headlights look much similar 
as if I had put  a you-know -what in the punch bowl.

After the session was closed, the fellow who have made the presentation 
asked me what I knew about intermod,  I told him of my ham radio and FM 
two-way experiences with the phenomenon, I was told that his company 
were hoping that all would work out in that area.

It did/has (so far) in the late nineties prior to my retirement, but I 
will say that strange things did occur for no good reason.

Just my similar experience with RF flying loosely about in the air, uh-huh.

Gary...wa6fgi


On 12/6/2013 1:26 PM, EDWARDS, EDDIE J wrote:
> Speaking of cable TV systems, which is one of our main power line interference customers in town...
>
> I attended an IEEE meeting this week with a presentation on "Multicasting in Cognitive Radio Networks" by a PHD college professor from Iowa.  It was very good and pretty technical, and nearly over my head, but the presenter was basically describing a very efficient wireless mesh type data network system that would use the unused portions of the TV spectrum (since it would probably be unlicensed operation).
>
> When I asked if RF Interference issues were analyzed since there would be possible RFI to and/or from power lines and cable TV systems.  He gave me a deer-in-the-headlights look and said no such analysis had been done.  After the presentation, he approached me with some questions about possible RF interference, and he seemed amazed there could be such interference.  It clearly had not occurred to him.
>
> 73, de ed -K0iL
>
> -----Original Message-----
> From: RFI [mailto:rfi-bounces at contesting.com] On Behalf Of W5JR.Mike
> Sent: Thursday, December 05, 2013 10:09 PM
> To: Anthony (N2KI)
> Cc: rfi at contesting.com
> Subject: Re: [RFI] RFI in the news
>
> Traditional cable TV systems use the same spectrum above 470 MHz that over the air broadcast uses. And they are still using the spectrum between channels 52 and 69 that has been repurposed for Land Mobile, Public Safety and cellular. And the issue goes both ways. Leakage from cable plants are heard by 700 and 800 MHz base stations.
>
> tnx
> Mike / W5JR
>
>> On Dec 5, 2013, at 1:05 PM, "Anthony (N2KI)" <n2ki.ham at gmail.com> wrote:
>>
>> This also happens with Direct TV C31-700 box.  FYI
>>
>>
>> Regards,
>>
>> Anthony (N2KI)
>>
>>
>>
>>
>>
>> On Thu, Dec 5, 2013 at 12:48 PM, Charles Coldwell <coldwell at gmail.com>wrote:
>>
>>> http://arstechnica.com/information-technology/2013/12/time-warner-cable-tv-goes-blurry-in-presence-of-verizon-lte-phones/
>>>
>>> --
>>> Charles M. Coldwell, W1CMC
>>> Belmont, Massachusetts, New England
>>> "Turn on, log in, tune out"
>>> _______________________________________________
>>> RFI mailing list
>>> RFI at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/rfi
>> _______________________________________________
>> RFI mailing list
>> RFI at contesting.com
>> http://lists.contesting.com/mailman/listinfo/rfi
> _______________________________________________
> RFI mailing list
> RFI at contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
>
> ----------------------------------------------------------------------
> This e-mail contains Omaha Public Power District's confidential and proprietary information and is for use only by the intended recipient.  Unless explicitly stated otherwise, this e-mail is not a contract offer, amendment, or acceptance.  If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.
> _______________________________________________
> RFI mailing list
> RFI at contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi