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[A-DX] Ofcom has announced jamming of radio spectrum during 2 weeks in October

  • Subject: [A-DX] Ofcom has announced jamming of radio spectrum during 2 weeks in October
  • From: tom df5jl <df5jl@xxxxxx>
  • Date: Tue, 30 Aug 2011 06:25:04 +0200
...via Glenn Hauser  and [UDXF] Yahoogroup -- 73, Tom DF5JL



Radio Spectrum Jamming
Ofcom has announced that jamming of radio spectrum will take place during 2 weeks in October. 

Times: 0700Z 3 Oct 11 to 2000Z 17 Oct 11.
Location: The jamming events will take place throughout the UK FIR/UIR north of 51 degrees North.
GPS Jamming locations: Faraid Head - from N58° 36.2' W004° 46.4'. Loch Ewe B - from N57° 51.9' W005° 41.1'. Loch Ewe A – from 57.7869N 5.7917W.
Frequency: Radar – discrete spots within MOD allocated frequencies within Charlie / Delta (specifically avoiding IFF/SSR frequency bands), Echo / Foxtrot, Golf. India / Juliet (avoiding Marine Navigation Bands in conditions of poor visibility) and Kilo Bands.
Communications – Exercise JW discrete frequencies only in bands HF 2000-26500KHZ and V/UHF 137-400MHZ (avoiding international Distress, Emergency and Exercise Safety frequencies).
In all cases jamming will be avoided on the TABOO frequencies listed in the UK Procedures for the Control of Non-Operational Jamming (Annex B). 

For further information contact
InfoGPS.Notices@xxxxxxxxxxxx

Wiki - Flight Information Region (FIR) & Upper Information Region (UIR)
http://en.wikipedia.org/wiki/Flight_information_region

EW letter bands
http://www.microwaves101.com/encyclopedia/letterbands.cfm

Global Navigation Space Systems: reliance and vulnerabilities
http://www.raeng.org.uk/news/publications/list/reports/
RAoE_Global_Navigation_Systems_Report.pdf

NATS - GPS Jamming in July
http://www.ead.eurocontrol.int/eadbasic/pamslight-1401DD6358958D3A2101578467A542F6/7FE5QZZF3FXUS/EN/AIC/P/047-2011/EG_Circ_2011_P_047_en_2011-06-16.pdf

SatNav jamming in September and October
http://www.southgatearc.org/news/june2011/gps_jamming.htm
(Southgate via Terry Krueger, FL, DXLD)

Watch out, October 11. What`s this about? (Krueger, DX LISTENING DIGEST)
Looks like some kind of exercise, but lasting a fortnight?? Note that broadcast and ham bands are not explicitly exempt! (Glenn Hauser ibid.) 


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