OT: GPS Blocking Exercise Cornwall June 2007

Fred · 2007-06-05T06:35:26+00:00

Just a heads up:MoD set to block sat nav systemsPeople in Cornwall have been warned satellite navigation systems will not work later this week as the Ministry of Defence carry out a jamming exercise.The aim of the GPS blocking exercise is to find out how interference could affect military personnel. It will take place on Thursday and Friday.The MoD said its Portreath base would be the base.The effect will extend for a radius of 11 km (7 miles) which would cover Camborne and Redruth."Although GPS provides highly accurate information, the radio signals from the satellite are extremely weak and are susceptible to both jamming and unintentional radio interference," said the MOD in a statement."The trials are taking place to better understand these effects on military equipment and therefore will help to protect our forces."An MOD spokesman said all the emergency services which might use the systems have been informed and if an emergency is under way, the MOD can suspend the trial.All ambulances are fitted with satellite navigation and in a statement, South Western ambulance service said it was aware of the jamming exercise and that key staff had been informed.Falmouth Coastguard said it had also been told.

Jun 05, 2007 22 Replies

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Austin Shackles 19 years ago

On or around Wed, 06 Jun 2007 22:49:20 +0100 (BST), "Dave Liquorice" enlightened us thusly:

I thought it was half-way between 12 and the sun. in fact, it is... at 6pm the sun should be due west, which makes 12 on the dial east and 3 south. You need to count back down the low side of the dial for it to work: south is at

4 on the dial at 8pm, not at 10.

and yes, for 12 read 1 in daylight savings time. For any real accuracy you need to know your longitude and correct to local time, although most time zones are narrow enough to be reasonable as a guide to going south rather than east or west.

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