New GPS Jamming Exercises.

[lenseman]

The MoD has informed Ofcom of the following GPS jamming exercise:

Dates: 7-11 September and 14-18 September 2009.

Times: limited periods between 09:00 and 17:00 hrs

Location: Within 5km of N52° 00.881’ and W003° 38.518’ (Sennybridge Training Area, Mid-Wales).

Contact: Trial Manager (during the trial) on 07766 134520 or the 24hr Sennybridge Operations point on 01874 635461

 

[sarabande]

does anyone know what frequencies they jam, and how they do it ?

(Sense of curiosity only /forums/images/graemlins/grin.gif)

 

[MarkJohnson12345]

River Usk is a bit shallow for the Sadler

 

[AntarcticPilot]

The relevant frequencies are:

Military: 1227.6 MHz
Civilian L1: 1575.42 MHz
Civilian L2: 1227.6 MHz
Nuclear burst detection L3: 1381.05 MHz

Telemetry on 2227.5 MHz.

Note that GPS jamming requires very little power; the signals coming down from the satellites are very weak, being constrained by the power budget available on a satellite, and the high orbits (20,000 km).