Got my first experience with GPS Jamming. Apparently, lots of
truckers on I-35 near the Kansas-Oklahoma border were jamming today.
I would go from 8 satellites showing on my GPS Nav Display (Cambridge
Model 20 GPS) to none, lost distance to turnpoint, lost ground track,
lost bearing to turnpoint in the blink of an eye. Typically, after a
minute or two, the GPS Nav would resume navigation with three
satellites showing. It would in rather short order (10-15 seconds)
get back up to tracking 8 satellites. Repeat process in 2-5 minutes.

I am assuming this was GPS jamming, as nobody else flying from
Sunflower reported any sort of issues, and it only happened in this
one stretch along I-35. Interestingly enough, it happend only once (I
think ) after I crossed to the east side or I-35. Maybe I was just
far enough from the jammers.

My flight is uploaded to OLC. If you download it and watch it in any
playback, you will see me stop, then jump forward. This particular
GPS has worked perfectly before and since. It was only this one brief
section of one leg of the flight. Of course, it really gets your
attention when your display goes all dashes, and the computer says
"GPS Wait".

Anyone else had an "encounter" like this?

Just curious

Steve Leonard
Nimbus 3 VJS

On Jul 23, 10:37*pm, Steve Leonard > wrote:
> Got my first experience with GPS Jamming. *Apparently, lots of
> truckers on I-35 near the Kansas-Oklahoma border were jamming today.
> I would go from 8 satellites showing on my GPS Nav Display (Cambridge
> Model 20 GPS) to none, lost distance to turnpoint, lost ground track,
> lost bearing to turnpoint in the blink of an eye. *Typically, after a
> minute or two, the GPS Nav would resume navigation with three
> satellites showing. *It would in rather short order (10-15 seconds)
> get back up to tracking 8 satellites. *Repeat process in 2-5 minutes.
>
> I am assuming this was GPS jamming, as nobody else flying from
> Sunflower reported any sort of issues, and it only happened in this
> one stretch along I-35. *Interestingly enough, it happend only once (I
> think ) after I crossed to the east side or I-35. *Maybe I was just
> far enough from the jammers.
>
> My flight is uploaded to OLC. *If you download it and watch it in any
> playback, you will see me stop, then jump forward. *This particular
> GPS has worked perfectly before and since. *It was only this one brief
> section of one leg of the flight. *Of course, it really gets your
> attention when your display goes all dashes, and the computer says
> "GPS Wait".
>
> Anyone else had an "encounter" like this?
>
> Just curious
>
> Steve Leonard
> Nimbus 3 VJS

Yes, about two weeks ago, flying from Moriarty. Some of the same
thing you described, plus vertical climbs that would delay and show
vertical movement without circling. I was thinking it was military
jamming or problems under thick water laden clouds.
http://www.onlinecontest.org/olc-2.0/gliding/flightinfo.html?flightId=211956832

Mike Carris

"Got my first experience with GPS Jamming. Apparently, lots of
truckers on I-35 near the Kansas-Oklahoma border were jamming today".

What kind of equipment do you think these truckers were using to jam
with?

On Jul 24, 11:57*am, glidergeek > wrote:
> "Got my first experience with GPS Jamming. *Apparently, lots of
> truckers on I-35 near the Kansas-Oklahoma border were jamming today".
>
> What kind of equipment do you think these truckers were using to jam
> with?

Cheap. Google....

I've seen intermittent loss of GPS signal at low altitude twice this
Summer... now I know why. In both cases I was very close to a
highway.

Things that make you go "grrrrrrrrrrr."

-Evan Ludeman / T8

On Jul 24, 12:44*pm, Greg Arnold > wrote:
> On 7/24/2011 11:29 AM, T wrote:
>
>
>
>
>
>
>
>
>
> > On Jul 24, 9:12 am, > *wrote:
> >> On Jul 24, 11:57 am, > *wrote:
>
> >>> "Got my first experience with GPS Jamming. *Apparently, lots of
> >>> truckers on I-35 near the Kansas-Oklahoma border were jamming today".
>
> >>> What kind of equipment do you think these truckers were using to jam
> >>> with?
>
> >> Cheap. *Google....
>
> >> I've seen intermittent loss of GPS signal at low altitude twice this
> >> Summer... now I know why. *In both cases I was very close to a
> >> highway.
>
> >> Things that make you go "grrrrrrrrrrr."
>
> >> -Evan Ludeman / T8
>
> > I know of no equipment carried by truckers that jam GPS. The FCC and
> > others would be very interested.
> > T
>
> Why would truckers want to jam GPS? *Also, I did a Google search, and I
> only see jammers that work within 30 feet.

From "The Economist":

"Such devices are illegal to sell or use, but they have become popular
with commercial drivers who object to their employers tracking their
every move. A jammer prevents a tracking device in the vehicle from
determining (and then reporting) its location and speed—but it also
disrupts GPS signals for others nearby."

On 7/24/2011 1:12 PM, Bill D wrote:
> On Jul 24, 12:44 pm, Greg > wrote:
>> On 7/24/2011 11:29 AM, T wrote:
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>> On Jul 24, 9:12 am, > wrote:
>>>> On Jul 24, 11:57 am, > wrote:
>>
>>>>> "Got my first experience with GPS Jamming. Apparently, lots of
>>>>> truckers on I-35 near the Kansas-Oklahoma border were jamming today".
>>
>>>>> What kind of equipment do you think these truckers were using to jam
>>>>> with?
>>
>>>> Cheap. Google....
>>
>>>> I've seen intermittent loss of GPS signal at low altitude twice this
>>>> Summer... now I know why. In both cases I was very close to a
>>>> highway.
>>
>>>> Things that make you go "grrrrrrrrrrr."
>>
>>>> -Evan Ludeman / T8
>>
>>> I know of no equipment carried by truckers that jam GPS. The FCC and
>>> others would be very interested.
>>> T
>>
>> Why would truckers want to jam GPS? Also, I did a Google search, and I
>> only see jammers that work within 30 feet.
>
> From "The Economist":
>
> "Such devices are illegal to sell or use, but they have become popular
> with commercial drivers who object to their employers tracking their
> every move. A jammer prevents a tracking device in the vehicle from
> determining (and then reporting) its location and speed—but it also
> disrupts GPS signals for others nearby."


The employers go to the expense of installing GPS devices, but they
don't mind that their drivers are disrupting the GPS signals? Doesn't
make much sense.

On 7/24/2011 2:20 PM, Greg Arnold wrote:
> On 7/24/2011 1:12 PM, Bill D wrote:
>> On Jul 24, 12:44 pm, Greg > wrote:
>>> On 7/24/2011 11:29 AM, T wrote:
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>> On Jul 24, 9:12 am, > wrote:
>>>>> On Jul 24, 11:57 am, > wrote:
>>>
>>>>>> "Got my first experience with GPS Jamming. Apparently, lots of
>>>>>> truckers on I-35 near the Kansas-Oklahoma border were jamming today".
>>>
>>>>>> What kind of equipment do you think these truckers were using to jam
>>>>>> with?
>>>
>>>>> Cheap. Google....
>>>
>>>>> I've seen intermittent loss of GPS signal at low altitude twice this
>>>>> Summer... now I know why. In both cases I was very close to a
>>>>> highway.
>>>
>>>>> Things that make you go "grrrrrrrrrrr."
>>>
>>>>> -Evan Ludeman / T8
>>>
>>>> I know of no equipment carried by truckers that jam GPS. The FCC and
>>>> others would be very interested.
>>>> T
>>>
>>> Why would truckers want to jam GPS? Also, I did a Google search, and I
>>> only see jammers that work within 30 feet.
>>
>> From "The Economist":
>>
>> "Such devices are illegal to sell or use, but they have become popular
>> with commercial drivers who object to their employers tracking their
>> every move. A jammer prevents a tracking device in the vehicle from
>> determining (and then reporting) its location and speed—but it also
>> disrupts GPS signals for others nearby."
>
>
> The employers go to the expense of installing GPS devices, but they don't mind
> that their drivers are disrupting the GPS signals? Doesn't make much sense.

Hmmm...re-ask your question again after you've queried a few employers to get
their takes on things (helpful hint: Werner Trucking), then report back to the
group.

Thanks!

Bob W.

P.S. Just to stay on topic, I predict all will be 'soar.'

On Jul 24, 1:12*pm, Bill D > wrote:
> On Jul 24, 12:44*pm, Greg Arnold > wrote:
>
>
>
>
>
> > On 7/24/2011 11:29 AM, T wrote:
>
> > > On Jul 24, 9:12 am, > *wrote:
> > >> On Jul 24, 11:57 am, > *wrote:
>
> > >>> "Got my first experience with GPS Jamming. *Apparently, lots of
> > >>> truckers on I-35 near the Kansas-Oklahoma border were jamming today".
>
> > >>> What kind of equipment do you think these truckers were using to jam
> > >>> with?
>
> > >> Cheap. *Google....
>
> > >> I've seen intermittent loss of GPS signal at low altitude twice this
> > >> Summer... now I know why. *In both cases I was very close to a
> > >> highway.
>
> > >> Things that make you go "grrrrrrrrrrr."
>
> > >> -Evan Ludeman / T8
>
> > > I know of no equipment carried by truckers that jam GPS. The FCC and
> > > others would be very interested.
> > > T
>
> > Why would truckers want to jam GPS? *Also, I did a Google search, and I
> > only see jammers that work within 30 feet.
>
> From "The Economist":
>
> "Such devices are illegal to sell or use, but they have become popular
> with commercial drivers who object to their employers tracking their
> every move. A jammer prevents a tracking device in the vehicle from
> determining (and then reporting) its location and speed—but it also
> disrupts GPS signals for others nearby."- Hide quoted text -
>
> - Show quoted text -

I understand why the truckers would want to do this, more $$ in pocket
ultimately, but I don't understand why the FCC and Trucking Companies
would not do anything to stop it's use.
GPS receivers operate very, very close to the natural noise threshold
of their radio spectrum and are therefore very, very sensitive to
interference, could easily be >1/4th mile for an airborne receiver.
Enforcement is always a big problem so all we can do is stay away from
major hiways while flying.

I once lost a $500 model airplane to a trucker's 1KW CB rig when I
flew over him. In general they are unaware of the problems they create
with their Creative Fixes!

On 7-24-2011 20:33, Free Flight 107 wrote:

>
> I once lost a $500 model airplane to a trucker's 1KW CB rig when I
> flew over him. In general they are unaware of the problems they create
> with their Creative Fixes!

Are you sure he was an illegal CBer running a KW or could he have been a
ham, legally running a KW? There are many truck drivers who are ham
radio operators. I drive a lot in my job, but generally run no more
that 150W while mobile...on frequencies from 1.8 MHz to 432 MHz. I have
gear for higher bands, but don't run them while mobile.

On 7/24/2011 8:05 PM, ray conlon wrote:
> On Jul 24, 10:45 pm, > wrote:
And the new 4G cellphone- GPS
> interference battle is just beginning. The cell phone industry is
> promising to deliver billions to the federal coffers, and the FAA cost
> the feds $$$, who do you think will win that one?

I'm betting the cell phone people lose this one - it's not just the FAA
that uses GPS and intends to depend heavily upon for ADB-S, but the
airliners filled with nervous passengers (aka "taxpayers"), but many
businesses and about a jillion consumers (aka "taxpayers").

At least the problem is not wide spread at the moment. I've never
experienced a GPS problem while flying or driving (except for tunnels
and tall buildings!).

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)

;777762']Got my first experience with GPS Jamming. Apparently, lots of
truckers on I-35 near the Kansas-Oklahoma border were jamming today.
I would go from 8 satellites showing on my GPS Nav Display (Cambridge
Model 20 GPS) to none, lost distance to turnpoint, lost ground track,
lost bearing to turnpoint in the blink of an eye. Typically, after a
minute or two, the GPS Nav would resume navigation with three
satellites showing. It would in rather short order (10-15 seconds)
get back up to tracking 8 satellites. Repeat process in 2-5 minutes.

I am assuming this was GPS jamming, as nobody else flying from
Sunflower reported any sort of issues, and it only happened in this
one stretch along I-35. Interestingly enough, it happend only once (I
think ) after I crossed to the east side or I-35. Maybe I was just
far enough from the jammers.

My flight is uploaded to OLC. If you download it and watch it in any
playback, you will see me stop, then jump forward. This particular
GPS has worked perfectly before and since. It was only this one brief
section of one leg of the flight. Of course, it really gets your
attention when your display goes all dashes, and the computer says
"GPS Wait".

Anyone else had an "encounter" like this?

Just curious

Steve Leonard
Nimbus 3 VJS

The GPS jamming device is really a kind of gadget that block the signal of a GPS unit. I hit upon a website that sells lots of jammers like the cell phone jammer and GPS jammer, it is http://www.jammerall.com/ , you can go there and take a look , it's really funny.

On Jul 24, 11:52*pm, Alfaest > wrote:
> 'Steve Leonard[_2_ Wrote:
>
>
>
>
>
>
>
>
>
> > ;777762']Got my first experience with GPS Jamming. *Apparently, lots of
> > truckers on I-35 near the Kansas-Oklahoma border were jamming today.
> > I would go from 8 satellites showing on my GPS Nav Display (Cambridge
> > Model 20 GPS) to none, lost distance to turnpoint, lost ground track,
> > lost bearing to turnpoint in the blink of an eye. *Typically, after a
> > minute or two, the GPS Nav would resume navigation with three
> > satellites showing. *It would in rather short order (10-15 seconds)
> > get back up to tracking 8 satellites. *Repeat process in 2-5 minutes.
>
> > I am assuming this was GPS jamming, as nobody else flying from
> > Sunflower reported any sort of issues, and it only happened in this
> > one stretch along I-35. *Interestingly enough, it happend only once (I
> > think ) after I crossed to the east side or I-35. *Maybe I was just
> > far enough from the jammers.
>
> > My flight is uploaded to OLC. *If you download it and watch it in any
> > playback, you will see me stop, then jump forward. *This particular
> > GPS has worked perfectly before and since. *It was only this one brief
> > section of one leg of the flight. *Of course, it really gets your
> > attention when your display goes all dashes, and the computer says
> > "GPS Wait".
>
> > Anyone else had an "encounter" like this?
>
> > Just curious
>
> > Steve Leonard
> > Nimbus 3 VJS
>
> The GPS jamming device is really a kind of gadget that block the signal
> of a GPS unit. I hit upon a website that sells lots of jammers like the
> cell phone jammer and GPS jammer, it ishttp://www.jammerall.com/, you
> can go there and take a look , it's really funny.
>
> --
> Alfaest

This product can send mess codes to create interference to block
signals from the GSP satellites and the typical jamming range is 10 to
20 meters.

10-20 meters? how would that jam my GPS in a glider at altitude?

On Jul 25, 8:30*am, glidergeek > wrote:
> On Jul 24, 11:52*pm, Alfaest > wrote:
>
>
>
>
>
> > 'Steve Leonard[_2_ Wrote:
>
> > > ;777762']Got my first experience with GPS Jamming. *Apparently, lots of
> > > truckers on I-35 near the Kansas-Oklahoma border were jamming today.
> > > I would go from 8 satellites showing on my GPS Nav Display (Cambridge
> > > Model 20 GPS) to none, lost distance to turnpoint, lost ground track,
> > > lost bearing to turnpoint in the blink of an eye. *Typically, after a
> > > minute or two, the GPS Nav would resume navigation with three
> > > satellites showing. *It would in rather short order (10-15 seconds)
> > > get back up to tracking 8 satellites. *Repeat process in 2-5 minutes.
>
> > > I am assuming this was GPS jamming, as nobody else flying from
> > > Sunflower reported any sort of issues, and it only happened in this
> > > one stretch along I-35. *Interestingly enough, it happend only once (I
> > > think ) after I crossed to the east side or I-35. *Maybe I was just
> > > far enough from the jammers.
>
> > > My flight is uploaded to OLC. *If you download it and watch it in any
> > > playback, you will see me stop, then jump forward. *This particular
> > > GPS has worked perfectly before and since. *It was only this one brief
> > > section of one leg of the flight. *Of course, it really gets your
> > > attention when your display goes all dashes, and the computer says
> > > "GPS Wait".
>
> > > Anyone else had an "encounter" like this?
>
> > > Just curious
>
> > > Steve Leonard
> > > Nimbus 3 VJS
>
> > The GPS jamming device is really a kind of gadget that block the signal
> > of a GPS unit. I hit upon a website that sells lots of jammers like the
> > cell phone jammer and GPS jammer, it ishttp://www.jammerall.com/, you
> > can go there and take a look , it's really funny.
>
> > --
> > Alfaest
>
> This product can send mess codes to create interference to block
> signals from the GSP satellites and the typical jamming range is 10 to
> 20 meters.
>
> 10-20 meters? how would that jam *my GPS in a glider at altitude?- Hide quoted text -
>
> - Show quoted text -

The GPS signal from the satellites is a very low amplitude psuedo-
random-noise signal. It doesn't take much to make it unusable. A choke
ring antenna would probably eliminate the problem if you always flew
wings level, but that's not going to happen, is it?

On Jul 24, 4:12*pm, Bill D > wrote:
> On Jul 24, 12:44*pm, Greg Arnold > wrote:
>
>
>
>
>
> > On 7/24/2011 11:29 AM, T wrote:
>
> > > On Jul 24, 9:12 am, > *wrote:
> > >> On Jul 24, 11:57 am, > *wrote:
>
> > >>> "Got my first experience with GPS Jamming. *Apparently, lots of
> > >>> truckers on I-35 near the Kansas-Oklahoma border were jamming today".
>
> > >>> What kind of equipment do you think these truckers were using to jam
> > >>> with?
>
> > >> Cheap. *Google....
>
> > >> I've seen intermittent loss of GPS signal at low altitude twice this
> > >> Summer... now I know why. *In both cases I was very close to a
> > >> highway.
>
> > >> Things that make you go "grrrrrrrrrrr."
>
> > >> -Evan Ludeman / T8
>
> > > I know of no equipment carried by truckers that jam GPS. The FCC and
> > > others would be very interested.
> > > T
>
> > Why would truckers want to jam GPS? *Also, I did a Google search, and I
> > only see jammers that work within 30 feet.
>
> From "The Economist":
>
> "Such devices are illegal to sell or use, but they have become popular
> with commercial drivers who object to their employers tracking their
> every move. A jammer prevents a tracking device in the vehicle from
> determining (and then reporting) its location and speed—but it also
> disrupts GPS signals for others nearby."

Link to full article. http://www.economist.com/node/18304246

On 7/25/2011 4:24 PM, Papa3 wrote:

>> From "The Economist":
>>
>> "Such devices are illegal to sell or use, but they have become popular
>> with commercial drivers who object to their employers tracking their
>> every move. A jammer prevents a tracking device in the vehicle from
>> determining (and then reporting) its location and speed—but it also
>> disrupts GPS signals for others nearby."
>
> Link to full article. http://www.economist.com/node/18304246
>


I still don't understand this -- are trucking companies so dense that
they can't figure out that one of their drivers is jamming the GPS
signal? Seems like a driver who jams the signal would soon be looking
for a new job.

On Jul 25, 8:38*pm, Greg Arnold > wrote:
> On 7/25/2011 4:24 PM, Papa3 wrote:
>
> >> *From "The Economist":
>
> >> "Such devices are illegal to sell or use, but they have become popular
> >> with commercial drivers who object to their employers tracking their
> >> every move. A jammer prevents a tracking device in the vehicle from
> >> determining (and then reporting) its location and speed—but it also
> >> disrupts GPS signals for others nearby."
>
> > Link to full article.http://www.economist.com/node/18304246
>
> I still don't understand this -- are trucking companies so dense that
> they can't figure out that one of their drivers is jamming the GPS
> signal? *Seems like a driver who jams the signal would soon be looking
> for a new job.

Many of the trucking outfits use "contract"drivers who don't work
directly for them and have little control over what they do, for them
the GPS tracking is more of a "where is the load now" deal...

On Jul 24, 11:52*pm, Alfaest wrote:
'Steve Leonard[_2_ Wrote:









;777762']Got my first experience with GPS Jamming. *Apparently, lots of
truckers on I-35 near the Kansas-Oklahoma border were jamming today.
I would go from 8 satellites showing on my GPS Nav Display (Cambridge
Model 20 GPS) to none, lost distance to turnpoint, lost ground track,
lost bearing to turnpoint in the blink of an eye. *Typically, after a
minute or two, the GPS Nav would resume navigation with three
satellites showing. *It would in rather short order (10-15 seconds)
get back up to tracking 8 satellites. *Repeat process in 2-5 minutes.

I am assuming this was GPS jamming, as nobody else flying from
Sunflower reported any sort of issues, and it only happened in this
one stretch along I-35. *Interestingly enough, it happend only once (I
think ) after I crossed to the east side or I-35. *Maybe I was just
far enough from the jammers.

My flight is uploaded to OLC. *If you download it and watch it in any
playback, you will see me stop, then jump forward. *This particular
GPS has worked perfectly before and since. *It was only this one brief
section of one leg of the flight. *Of course, it really gets your
attention when your display goes all dashes, and the computer says
"GPS Wait".

Anyone else had an "encounter" like this?

Just curious

Steve Leonard
Nimbus 3 VJS

The GPS jamming device is really a kind of gadget that block the signal
of a GPS unit. I hit upon a website that sells lots of jammers like the
cell phone jammer and GPS jammer, it ishttp://www.jammerall.com/, you
can go there and take a look , it's really funny.

--
Alfaest

This product can send mess codes to create interference to block
signals from the GSP satellites and the typical jamming range is 10 to
20 meters.

10-20 meters? how would that jam my GPS in a glider at altitude?



Whatever you do, you want to do it by yourself. Whatever you think, you think about it in your mind. Whatever you have said, you say what you think is right. It is your right to keep all that about you secret. If there is someone steals them and cheats you by the way, if there is someone spies you and control you, you will not have the free right to achieve what you want to. What will you choose to do? Stay there to be ordered about or take courage to fight with them. so come to http://www.jammerall.com/ to buy a GPS signal jammer, it will defeat all your enemies and get back the right and time that belongs to you. Believe it or not, these stores do have the magic to solve your problem. i have benefit a lot from it.

;777762']Got my first experience with GPS Jamming. Apparently, lots of
truckers on I-35 near the Kansas-Oklahoma border were jamming today.
I would go from 8 satellites showing on my GPS Nav Display (Cambridge
Model 20 GPS) to none, lost distance to turnpoint, lost ground track,
lost bearing to turnpoint in the blink of an eye. Typically, after a
minute or two, the GPS Nav would resume navigation with three
satellites showing. It would in rather short order (10-15 seconds)
get back up to tracking 8 satellites. Repeat process in 2-5 minutes.

I am assuming this was GPS jamming, as nobody else flying from
Sunflower reported any sort of issues, and it only happened in this
one stretch along I-35. Interestingly enough, it happend only once (I
think ) after I crossed to the east side or I-35. Maybe I was just
far enough from the jammers.

My flight is uploaded to OLC. If you download it and watch it in any
playback, you will see me stop, then jump forward. This particular
GPS has worked perfectly before and since. It was only this one brief
section of one leg of the flight. Of course, it really gets your
attention when your display goes all dashes, and the computer says
"GPS Wait".

Anyone else had an "encounter" like this?

Just curious

Steve Leonard
Nimbus 3 VJS


it is really cool with a cell phone signal jammer.Your cell phone perhaps is giving out your secrets in face with the attack of cell phone tracking devices. What can be done to ensure the information security? Fortunately, the mobile phone jammers help us to come over the troublesome problem.A friend of mine who is a teacher was once annoyed by his students texting short messages during class, and later he bought a portable cell phone jammer, then all the students were confused that their cell phones cannot receive any signals even if it was the most advanced one.there are so charms of it.LOL...BTW,my friend said he bought it from online http://www.jammerall.com/ , and I checked some sites about that certain item. It's so funny that I'm thinking of purchasing one as well.

;777869']On 7/24/2011 8:05 PM, ray conlon wrote:
On Jul 24, 10:45 pm, wrote:
And the new 4G cellphone- GPS
interference battle is just beginning. The cell phone industry is
promising to deliver billions to the federal coffers, and the FAA cost
the feds $$$, who do you think will win that one?

I'm betting the cell phone people lose this one - it's not just the FAA
that uses GPS and intends to depend heavily upon for ADB-S, but the
airliners filled with nervous passengers (aka "taxpayers"), but many
businesses and about a jillion consumers (aka "taxpayers").

At least the problem is not wide spread at the moment. I've never
experienced a GPS problem while flying or driving (except for tunnels
and tall buildings!).

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)
it is really cool with a cell phone jammer, you can get into a peace world immediately with turning it on. i have got one from http://www.jammerall.com/ . you can try it, enjoy the magic power too.

;777869']On 7/24/2011 8:05 PM, ray conlon wrote:
On Jul 24, 10:45 pm, wrote:
And the new 4G cellphone- GPS
interference battle is just beginning. The cell phone industry is
promising to deliver billions to the federal coffers, and the FAA cost
the feds $$$, who do you think will win that one?

I'm betting the cell phone people lose this one - it's not just the FAA
that uses GPS and intends to depend heavily upon for ADB-S, but the
airliners filled with nervous passengers (aka "taxpayers"), but many
businesses and about a jillion consumers (aka "taxpayers").

At least the problem is not wide spread at the moment. I've never
experienced a GPS problem while flying or driving (except for tunnels
and tall buildings!).

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)

To use cell phone in public places ignoring others' feeling is totally immoral and ridiculous. and it is very dangerous to make calls when you are driving. It should be banned in some certain sites as from my point of view. I'd like to recommend the gov. to install cell phone jammers in some certain public places I think.
But for now I just bought a cell phone jammer for my own use from http://www.jammerall.com/ , it helps really much when I feel fed up with the cell phone noise.

On Jul 24, 9:43*pm, Eric Greenwell > wrote:
> On 7/24/2011 8:05 PM, ray conlon wrote:> On Jul 24, 10:45 pm, > *wrote:
>
> * And the new 4G cellphone- GPS
>
> > interference battle is just beginning. The cell phone industry is
> > promising to deliver billions to the federal coffers, and the FAA cost
> > the feds $$$, who do you think will win that one?
>
> I'm betting the cell phone people lose this one -

SNIPPED _ CB

> At least the problem is not wide spread at the moment. I've never
> experienced a GPS problem while flying or driving (except for tunnels
> and tall buildings!).
>

Jamming and spoofing has been a problem for US soaring for years, now.
The sources of jamming and spoofing signals is proliferating, as GPS
uses become
more widespread.

Military testing has spread around the western US from only two sites,
ten years ago,
to multiple sites around popular soaring areas. Fortunately, jam or
spoof activities
from military activities are NOTAMed, which is no consolation if you
are planning an
achievement flight or a contest that happens to be concurrent to
testing.

SSA has helped inform, educate the military and de-conflict military
testing
for some glider events.

In the past two years, we have monitored the Light Squared 4G
frequency
conflict, and participated in public comments on that 'problem', which
is a serious
threat to many aviation users. Their testing offered widespread
potential file
interruption this summer in the West.

Less widely publicized has been WAAS station interference by drivers
with jammers
moving on roadways past approach thresholds at MAJOR hub airports.
Yes, it's
true. Truckers have jammers. They are fortunately, usually localized
in effect,
since they simply want to disable their on-board receivers. But you
don't see that
issue making news media headlines, either.

I have commented to the GNSS-committee members of IGC about these
issues
over the past six years, particularly when some world record altitude
attempts
were imminent using only GNSS-recorders for documentation. (Perlan.)
I was then
poo-poohed for raising issues that "weren't likely to be a problem."
All I asked then
was for consideration of carrying "old" technology for altitude
verification and
continuity, in a location where known jamming was taking place. My
requests
were rebuffed. I still have two 60,000 foot barographs.

Fortunately, the truckers won't influence those potential
achievements. But the solar
flares in the next two or three years might give us other problems.

Steve, I know you have the L/D, but thermal higher !

From the decidely non-technical gal,

Cindy B
SSA Governmental Liaison Committee - Airspace
Region 12 Director

;777762']Got my first experience with GPS Jamming. Apparently, lots of
truckers on I-35 near the Kansas-Oklahoma border were jamming today.
I would go from 8 satellites showing on my GPS Nav Display (Cambridge
Model 20 GPS) to none, lost distance to turnpoint, lost ground track,
lost bearing to turnpoint in the blink of an eye. Typically, after a
minute or two, the GPS Nav would resume navigation with three
satellites showing. It would in rather short order (10-15 seconds)
get back up to tracking 8 satellites. Repeat process in 2-5 minutes.

I am assuming this was GPS jamming, as nobody else flying from
Sunflower reported any sort of issues, and it only happened in this
one stretch along I-35. Interestingly enough, it happend only once (I
think ) after I crossed to the east side or I-35. Maybe I was just
far enough from the jammers.

My flight is uploaded to OLC. If you download it and watch it in any
playback, you will see me stop, then jump forward. This particular
GPS has worked perfectly before and since. It was only this one brief
section of one leg of the flight. Of course, it really gets your
attention when your display goes all dashes, and the computer says
"GPS Wait".

Anyone else had an "encounter" like this?

Just curious

Steve Leonard
Nimbus 3 VJS

i know it is really cool with a cell phone jammer, you can do what you want to do anytime without noises, i have got one from my friend introduction the website is http://www.jammerall.com. help me a lot, share with you if you need, experience a different life.