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

[Bruce Gentry]

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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