Don't forget that the navigation signals from the VOR/VORTAC Stations are
received in THE AIRPLANE at altitude, from great distances.
<https://acronyms.thefreedictionary.com/VORTAC>
A small interfering signal can disrupt navigation without being close to
the ground station facility.
It is not unusual for an aircraft to fly a VICTOR AIRWAY RADIAL to/from a
Station out to 75 miles or more,
and MUCH more when flying one of the JULIET AIRWAY RADIALS.
A bogus signal 5 miles below you can be a very bad thing whilst you are
flying a JULIET RADIAL emanating from a VOR STATION 150 Miles out.
On Wed, Dec 18, 2019 at 6:44 PM Eddie Edwards <eddieedwards@centurylink.net>
wrote:
> Leonard,
>
> Wouldn't this only apply or be helpful to a ham operator if he lived close
> to an FAA regulated located such as an airport?
>
> I doubt the FAA cares about all the RFI easily found in today's typical
> electric grid system until it is occurring close enough to one of their
> locations or their equipment. Once it's close enough to cause harmful
> interference they immediately call the utility and expect it resolved
> within
> 2 weeks.
>
> 73, de ed -K0iL
>
> -----Original Message-----
> From: RFI <rfi-bounces@contesting.com> On Behalf Of Leonard Halvorsen via
> RFI
>
> If you have access to a spectrum analyzer, look for spikes in the Civil
> Aviation Band. If you find any, report them to the FAA.
> They have ZERO tolerance for interference in their spectrum.
> Things have changed since I used to fly, but if the VOR or VORTAC
> (Navigation) and the Glide Slope Systems are still located between 108 and
> 118 Mc and you see a noise spike THERE, you will get action from the FAA
> even faster than if there is interference in the Comm Band - 118 to 136 Mc.
> For noise/interference in the military band, 225 to 400 Mc, you need to
> contact the NTIA to report it.
>
> On Wed, Dec 18, 2019 at 3:12 PM MICHAEL ST ANGELO <mstangelo@comcast.net>
> wrote:
>
> > I was considering allies in this fight. I thought of Elon Musk but he
> > has written off AM as an entertainment medium. He has phased out AM
> > radios in this cars.
> >
> > HF communications is primarily used by Hams. There is still some
> > aeronautical mobile and I haven't heard maritime mobile recently so I
> > don't believe they will lobby for tighter rules. In addition, they
> > operate over water, not land, so interference is not an issue, except
> > from their own systems.
> >
> > Next is the VHF aeronautical band. It is still AM and the
> > administrators are sensitive to interference when it affects them. If
> > they complain we will get some action.
> >
> > Mike N2MS
>
>
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