[Milsurplus] Cyber threats prompt return of radio for ship navigation

[MICHAEL ST ANGELO]

Doesn't the Military use the GPS Precision mode which uses more than one frequency and is encrypted and harder to jam?

The Military does not advertise this fact.

Mike N2MS


> On August 7, 2017 at 10:07 PM Bruce Gentry <ka2ivy at verizon.net> wrote:
> 
> 
> That is true.  GPS is surprisingly easy to alter or jam, and it's done 
> all the time.  Skilled trades people are being disrespected and 
> harrassed by being tracked at their work by sniveling hyper controlling 
> supervisors.  GPS jammers are not difficult to find, I think most of 
> them  do not transmit anything, but interfere by throwing a dipole on 
> GPS frequencies in and out of resonance, causing severe multipath 
> interference without interfering with data and telephone calls. The ones 
> for blocking employee cell phone and company truck trackers are normally 
> only effective when close to the antenna. Those that transmit a signal 
> can be very dangerous, one of them  prevented a sea port from operating 
> for a few hours until the truck causing the spoof was found and the 
> device shut off.
> 
>        Bruce Gentry   KA2IVY
> 
> On 8/7/17 9:15 PM, Peter Gottlieb wrote:
> > Isn't that how they captured one of our military drones?
> >
> >
> >
> > On 8/7/2017 8:34 PM, Gene Smar wrote:
> >> After the two US Navy ships were captured then released by Iranian
> >> Revolutionary Guard sailors last year, I read several accounts that 
> >> reported
> >> the US sailors later said their GPS went haywire while passing near 
> >> Iranian
> >> waters.  The articles speculated that the Iranians were able to spoof 
> >> GPS
> >> signals and "lure" the vessels close to shore.  Here's one reference:
> >> https://sofrep.com/46818/gps-spoofing-how-iran-tricked-us-patrol-boats-into- 
> >>
> >> capture/ .
> >>
> >> What's old is new again.
> >>
> >>
> >> 73 de
> >> Gene Smar  AD3F
> >>
> >>
> >>
> >>
> >> -----Original Message-----
> >> From: milsurplus-bounces at mailman.qth.net
> >> [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of Robert Nickels
> >> Sent: Monday, August 07, 2017 5:42 PM
> >> To: Milsurplus at mailman.qth.net
> >> Subject: [Milsurplus] Cyber threats prompt return of radio for ship
> >> navigation
> >>
> >> There's been talk of this for some time, but now it seems that South 
> >> Korea
> >> is motivated to make it happen (for some reason!) and eLoran is getting
> >> major media attention:
> >>
> >> ttps://www.reuters.com/article/us-shipping-gps-cyber-idUSKBN1AN0HT
> >>
> >> Residents are opposing the antenna installation - so what's new? 
> >> (Note that
> >> a bill to restore the eLoran system has been passed by the US House 
> >> and will
> >> go to the Senate for approval).
> >>
> >> 73, Bob W9RAN
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