[time-nuts] The Demise of LORAN (was Re: Reference oscillator accuracy)

J. Forster jfor at quik.com
Sun Nov 15 18:07:52 UTC 2009


> Chuck Harris wrote:
>> I guess the point you folks aren't getting is you can make a very
>> effective local GPS jammer that runs off of a 9V transistor radio
>> battery,
>> and will last for several weeks.  It can be done for a total cost of
>> a few bucks per jammer.... search the web, the designs are out there.
>
> We've known about it for years.
>
>> Toss the GPS jammers indiscriminately around the landscape, and you put
>> GPS out of business for a very low cost.
>
> Exactly. You can manufacture hundreds of them and disperse them around.
> Finding one of those is easy. Having many tens of them around makes it
> harder. Even if you find several of them, it will take the battery-time
> for the attack to go away completly. The strategy for such an attack and
> the strategy to deal with such an attack is a bit different.

Not so.

You can easily buy a 1F or more capacitor. Take a small box, like a juice
box, put a few  solar cells on it and a 1F cap and jammer with a pseudo 
random on-off timer inside and deploy.

Bingo...  a headache for years.

-John








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