"John" <(E-Mail Removed)> wrote:
>Gilbert Smith wrote:
>> "Mortimer" <(E-Mail Removed)> wrote:
>>
>>> Is there a problem with accuracy of GPS at the moment (eg due to
>>> weather or the Icelandic ash cloud)?
>>>
>>> Over the past couple of days the GPS in my girlfriend's Nokia 5800
>>> has started experiencing errors of several hundred metres in its
>>> position - for example the OVI maps application tells you to turn
>>> off at a junction just after you have passed it, and the position on
>>> the map (or on an OS map in Viewranger) can be wrong by several
>>> hundred metres, either ahead or behind the real position or
>>> following the course of the road but offset 50-200 metres to one
>>> side.
>>>
>>> Most of the time the trace is very accurate. The errors occur in the
>>> open, not in wooded areas where there could be reception problems.
>>>
>>> On one occasion just after I came to a halt at a junction at the end
>>> of a slip road (after overshooting and having to do a U turn because
>>> it told me too late to leave the main road) it told me to "observe
>>> speed limit" - so it thought I was still moving, and faster than the
>>> limit for that road!
>>
>> GPS Jamming Trials:
>> http://www.theregister.co.uk/2007/06...rial_cornwall/
>>
>> How far were you from Cornwall ??
>
>That article is from 2007!
>
LOL. Ooops, sorry, picked the wrong link. Here is the current email:
Dates jamming will take place: 31/05/2011 - 10/06/2011
Time periods during which jamming will take place: Periodically Mon-
Fri 09:00 - 17:30
Details of Jamming.
a. Location of MULTIPLE jammers: Land based within 5km of N52°
00.881’ W003° 38.518’ (SN873365 – Dixie’s Corner).
b. Frequencies: 24 MHz bands centred around 1176.45 MHz (L5),
1227.60MHz (L2) and 1575.42MHz (L1).
c. Total Power: Up to 100 Watts EIRP. Whenever possible the
transmissions will be at lower powers.
d. Jammers: Both omni and directional jammers to minimise
affected areas.
e. Affected areas will be line of sight from the jammers for
land based GPS receivers.
Ofcom stakeholders should contact
(E-Mail Removed)
Linear Mode
