The active TV antennas mounted on boat masts were a major contributor to on= e case of GPS interference. Michael On Mon, Nov 1, 2010 at 10:07 AM, Jack Iveywrote: > You're sure it's RF and not something else? > > There was an infamous case in Monterey Bay that disabled GPS > on-and-off for months. Turned out to be that bane of the > radio amateur, a faulty TV amplifier in someone's > attic. You might want to check your own house, although > it could also be a neighbor. > > > -----Original Message----- > From: psnlist-request@.............. [mailto: > psnlist-request@............... On Behalf Of jonfr@......... > Sent: Monday, November 01, 2010 12:44 PM > To: psnlist@.............. > Subject: Re: GPS RECEIVER > > Hi, > > I have never had a GPS signal jammed because of some other transmitters > that are being used close to my GPS antenna. > > Regards, > J=F3n Fr=EDmann. > > > Hello PSN: > > > > Many of you have this gps receiver to get good times on your graphs > > and over time you should learn any problems. > > > > I have found one Which I do not know how to beat. > > > > There seems to be RFI related problems > > where the in the presence of a high energy RF field > > of some frequency the GPS signal or A/D board is being > > jammed and the lock is lost and an alarm will sound. > > > > This problem is not the fault of of the device > > but simply related to the fact the unwanted RF signal > > has penetrated the electronics. > > > > Can anyone tell me if they have successfully won > > the battle of when like a police car or fire truck > > or other government car is outside in the neighborhood with a 25 watt > > transmitter maybe 100ft away and using their radio ? > > > > It wipes out my data and everything for a minute or so. > > > > This mostly happens in the winter when the city > > here grows three times its normal population. > > > > Comments ? > > > > geoff > > > > or, grumbly in Arizona. > > > > > > __________________________________________________________ > > > > Public Seismic Network Mailing List (PSNLIST) > > > > To leave this list email PSNLIST-REQUEST@.............. with > > the body of the message (first line only): unsubscribe > > See http://www.seismicnet.com/maillist.html for more information. > > > > > __________________________________________________________ > > Public Seismic Network Mailing List (PSNLIST) > > To leave this list email PSNLIST-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ > > Public Seismic Network Mailing List (PSNLIST) > > To leave this list email PSNLIST-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > The active TV antennas mounted on boat masts were a major contributor to on= e case of GPS interference.
MichaelOn= Mon, Nov 1, 2010 at 10:07 AM, Jack Ivey <ivey@..........> wrote:
You're sure i= t's RF and not something else?
There was an infamous case in Monterey Bay that disabled GPS
on-and-off for months. =A0Turned out to be that bane of the
radio amateur, a faulty TV amplifier in someone's
attic. =A0You might want to check your own house, although
it could also be a neighbor.
-----Original Message-----
From: psnlist-request@web= tronics.com [mailto:p= snlist-request@..............] On Behalf Of jonfr@.........
Sent: Monday, November 01, 2010 12:44 PM
To: psnlist@..............
Subject: Re: GPS RECEIVER
Hi,
I have never had a GPS signal jammed because of some other transmitters
that are being used close to my GPS antenna.
Regards,
J=F3n Fr=EDmann.
> Hello PSN:
>
> Many of you have this gps receiver to get good times on your graphs
> and over time you should learn any problems.
>
> I have found one Which I do not know how to beat.
>
> There seems to be RFI related problems
> where the in the presence of a high energy RF field
> of some frequency the GPS signal or A/D board is being
> jammed and the lock is lost and an alarm will sound.
>
> This problem is not the fault of of the device
> but simply related to the fact the unwanted RF signal
> has penetrated the electronics.
>
> Can anyone tell me if they have successfully won
> the battle of when like a police car or fire truck
> or other government car is outside in the neighborhood with a 25 watt<= br> > transmitter maybe 100ft away and using their radio ?
>
> It wipes out my data and everything for a minute or so.
>
> This mostly happens in the winter when the city
> here grows three times its normal population.
>
> Comments ?
>
> geoff
>
> or, grumbly in Arizona.
>
>
> __________________________________________________________
>
> Public Seismic Network Mailing List (PSNLIST)
>
> To leave this list email PSNLIST-REQUEST@.............. with
> the body of the message (first line only): unsubscribe
> See http://www.seismicnet.com/maillist.html for more information.
>
__________________________________________________________
Public Seismic Network Mailing List (PSNLIST)
To leave this list email = PSNLIST-REQUEST@.............. with
the body of the message (first line only): unsubscribe
See h= ttp://www.seismicnet.com/maillist.html for more information.
__________________________________________________________
Public Seismic Network Mailing List (PSNLIST)
To leave this list email = PSNLIST-REQUEST@.............. with
the body of the message (first line only): unsubscribe
See h= ttp://www.seismicnet.com/maillist.html for more information.