[time-nuts] ANN: UK GPS Jamming Notice update

David J Taylor david-taylor at blueyonder.co.uk
Wed Dec 19 20:47:37 UTC 2012

Folks, I have received the following....


Dates.  Between 8 and 12 April 13

Times.  Between 10.00 to 12.00 GMT and 14.00 to 16.00 GMT daily.

Location of jammer.  The jamming aircraft will fly a ground track based on 
the Benbecula (BEN) VOR 275° radial.  The aircraft track will extend from 
10nm west of the BEN VOR to 60nm west of the BEN VOR

Frequencies.  24MHz bands centred around 1227.60MHz and 1575.42MHz.

Jamming aircraft altitude.  3500ft Above Mean Sea Level (AMSL).

Affected areas.  Interference prediction plots for a Civil GPS receiver at 
165, 3000, 10000 and 30000 ft AMSL

It is recognised that this trial will have some effects on local operations 
but as always safety of life will take precedence over trials activities. 
Therefore, in order to reduce these effects as much as possible, the 
following measures will be carried out:

a.  The jamming will only be transmitted in a westerly direction away from 
the mainland.

b.  Continuous jamming will be limited to 12 minutes maximum per run with 5 
minutes minimum between runs.

c.  Both Benbecula Air Traffic Control and Stornoway Coastguard will be 
informed each day as to whether jamming activity will be taking place and 
when exercises are complete for the day.

I hope that is helpful.

SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor at blueyonder.co.uk 

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