[time-nuts] GPS Jammers
brahn at woh.rr.com
Tue Nov 13 21:06:34 EST 2007
Magnus Danielson wrote:
> ); SAEximRunCond expanded to false
> Errors-To: time-nuts-bounces+brahn=woh.rr.com at febo.com RETRY
> From: Brooke Clarke <brooke at pacific.net>
> Subject: Re: [time-nuts] GPS Jammers
> Date: Tue, 13 Nov 2007 17:11:46 -0800
> Message-ID: <473A4B52.6080404 at pacific.net>
>> ); SAEximRunCond expanded to false
>> Errors-To: time-nuts-bounces+magnus=rubidium.dyndns.org at febo.com RETRY
>> Hi Tom:
>> I've also seen the three antenna version on the asian discount web pages.
>> Do you know if any of them have test reports?
>> I question of the one that looks like a cigarette lighter with a 1" whip
>> antenna can do much.
> 10 km radius have been measured with similar properties.
It really doesn't take much!
One of my favorite GPS jamming incidents of public record is the one at
For another look at things, please see:
Bringing this back on the topic of time :) The Fall 2007 issue of the
magazine "Inside GNSS" has an interesting article "Fuzzy Time -
GPS-Based Synchronizers in the Presence of Interference" For a CW
signal, a GPS timing receiver's performance begins to degrade when the
interfering signal is at a level of -87 dBm. With an FM interference
source, it starts to degrade at -106 dBm. Well worth the read if you
can find this magazine.
Wisdom has two parts:
1. having a lot to say; and
2. not saying it!
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