UKC

Something to maybe be aware of if you are a regular GPS user and you are planning any outings near the affected area next week or the week after:

http://www.bbc.co.uk/news/uk-scotland-highlands-islands-34413696
http://stakeholders.ofcom.org.uk/spectrum/gps-jamming-exercises/feraid-head...

The BBC article says that the MCofS is "flagging up" the information but I can't find anything about it on their web site (perhaps my site search mojo is just weak this morning).

A search on Ofcom's web site also returns notifications about a number of previous exercises which have involved GPS jamming, suhggesting that it is rather more common than I had expected.

Note that this appears to be a localised jamming device - Ofcom notices for previous instances refer to transmitter outputs between 5W and 1kW EIRP - rather than enabling Selective Availability (SA), something that the US have always said they would retain the right to do since they tuerned it off in 2000. Turning on SA would affect the accuracy of civilian GPS worldwide whereas these jamming devices seem to be intended simply to stop GPS working altogether (denial of service) in a localised area.

In reply to Martin W:

It is standard practice for years for this exercise Martin - there's more information here including some maps to show the localities and times where you can expect GPS jamming, on pages 15-18
http://blogs.scotland.gov.uk/coastal-monitoring/files/2015/09/20150908-JW15...
I've taken part in a few JMC/Joint Warrior exercises at sea and on land, the bar at Aultbea will make a few quid in the next couple of weeks

In reply to drmarten:

Under EU law it is illegal to harm or harass cetaceans..

In reply to Martin W:

These have appeared on the Clyde just now (zoomed phone snap, sorry):

http://www.ootnaboot.scot/scrapbook/20151002Warships.jpg

Related? Or is Glasgow being invaded as I type? :-O

In reply to Martin W:

Wouldn't they prefer a nice game of chess?

In reply to skog:



Isn't that one of the new type 45 destroyers?

https://commons.wikimedia.org/wiki/File:Type_45_Destroyer_HMS_Daring_in_the...

They were built in Glasgow.

In reply to zebidee:

I don't know, but it isn't normally parked there and it isn't alone!

In reply to zebidee:

That's HDMS Niels Juel, a Danish frigate.

In reply to zebidee:
dunno, but it will be a rubbish cruise - it hasn't got any windows and I can't see the waterslide OR the casino

and srsly, I can imagine that all those sonar games will make it a pretty rubbish time for any hapless cetaceans caught up in this

In reply to malk:


Unless you are Japanese! Then you can pretend you are conducting """Research"" .