[Milsurplus] Spoofing GPS

[Kmec at aol.com]

Actually very easy to jam GPS, I worked on this for Northrop Grumman  while 
in Balt Wash area from 1995 to
2004. Came up with lots of simple techniques.  Actually,nowadays  a drone 
flying over the area with a 1 watt jammer would wipe out GPS for a VERY  long 
distance. It is also possible to repeat codes with delays and spoof as  
well.
This work came out the worry that precision guided munitions used in Gulf  
War 1 showed the bad guys what we can do. Russians sold 2 watt "tuna can" 
jammer  on world market for $4K, made by AviaConversa, very effective.  GPS is 
 super vulnerable and I have been wondering when we would smarten up. 
That's why  M code came to be.
 
Jeff K.
 
Message: 1
Date: Tue, 9 Feb 2016 11:26:37 -0800
From: Mark  <boeing377 at aol.com>
To: milsurplus at mailman.qth.net
Subject:  [Milsurplus] Spoofing GPS
Message-ID:  <752F9139-C3CB-425F-8510-F033872E838C at aol.com>
Content-Type:  text/plain;    charset=us-ascii

Ray F wrote:

"Wonder  about the Iranian thing, no easy task to mask over GPS downlink, 
would have to  be something like the old Tropo Scatter operation and involve 
bouncing massive  amounts of energy off the ionosphere to get the antenna to 
see it."

I  dint know anything about GPS spoofing but GPS jamming is easy. Just buy 
an old  Radio Shack amplified TV antenna and make the amp  oscillate:

http://gpsworld.com/the-hunt-rfi/

Many cheap GPS  jammers are advertised on Chinese retail websites. Don't 
know if they are  effective. 

AF6IM



> On Feb 9, 2016, at 9:18 AM,  milsurplus-request at mailman.qth.net wrote:
> 
> Wonder about the  Iranian thing, no easy task to mask over GPS downlink, 
would have to be  something like the old Tropo Scatter operation and involve 
bouncing massive  amounts of energy off the ionosphere to get the antenna 
to see  it.


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