[time-nuts] UK announcement: Notice of GPS Jamming

[Magnus Danielson]

On 15/08/11 12:25, David J Taylor wrote:
> Ofcom update: NOTIFICATION OF GPS JAMMING EXERCISES
>
> Folks, I have received the following:
>
> ____________________________________________________
> STANFORD TRAINING AREA, EAST ANGLIA, SEPTEMBER AND OCTOBER 2011
>
> Dates: Between 19 and 23 September 2011 and between 17 and 21 October
> 2011 inclusive.
>
> Times: 19 to 23 September - between 0600 and 0900 BST and again between
> 1600 and 1930 BST
> 17 to 21 October - between 0900 and 1730 BST.
>
> Location of MULTIPLE jammers: Land based within 5km of N52° 31.0' E000°
> 45.0'.
>
> Frequency: A 24 MHz band centred around 1575.42MHz (GPS L1).
>
> Total Power: Up to 10 Watts EIRP.
>
> It is stressed that, as in previous exercises, Safety of Life operations
> will at all times take precedence over exercise activities.

A GPS L2 capable receiver would maybe survive... but they are not many 
so far.

Few receivers use the 24 MHz bandwidth, it used to be only 20,46 MHz for 
P(Y) capable receivers.

Would be fun if someone could measure what happends to that piece of 
spectrum.

Cheers,
Magnus