[time-nuts] GPS jamming exercise

David davidwhess at gmail.com
Tue May 8 20:39:58 UTC 2012


They will not be using a null steering antenna because of ITAR but IF
notching is still a possibility.  I suspect the easiest change is to
use a superhetrodyne design so that all of the out of band rejection
does not depend on the RF filter but it will cost the power and space
of the local oscillator, mixer, and IF filter.

On Tue, 08 May 2012 15:54:33 -0400, Mike Naruta AA8K
<aa8k at comcast.net> wrote:

>“Receivers which cannot tolerate LightSquared will get in 
>trouble in North Korea!” commented one well-known GPS 
>manufacturer. “Today's receivers don't have protection. We just 
>completed our ad [for the June issue of GPS World] which 
>somewhat covers this.”
>
>An interesting half-truth.  So, will their new receivers protect 
>against in-band jamming?
>
>
>On 05/08/2012 03:17 PM, Marco IK1ODO wrote:
>>
>> Just read in GPSWorld magazine.
>
>>
>> 73 - Marco IK1ODO



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