From CAA Skywise:
Jamming activity will take place between the 05th – 09th April 2021 (0900-1700) affecting airspace around Spadeadam, Cumbria
Jamming equipment will be located near to N55° 03.1’ W002° 33.3. Activity may affect GNSS equipment within 30NM (all directions) up to and above 40,000FT AMSL.
During the trials impacted systems may suffer intermittent or total failure. An associated NOTAM has been raised.
For further information or feedback on this activity contact spectrum@caa.co.uk
Emergency cease jamming contact:
016977 47321 Ext 6386, 6375 or 6388.