https://www.bundesnetzagentur.de/DE/Vportal/TK/Funktechnik/Stoerung/start.html https://www.bundesnetzagentur.de/DE/Vportal/TK/Funktechnik/S... gives this exampl

https://www.bundesnetzagentur.de/DE/Vportal/TK/Funktechnik/Stoerung/start.html https://www.bundesnetzagentur.de/DE/Vportal/TK/Funktechnik/S... gives this example: > Der Flughafen Bremen meldete ein Störungssignal in der Kommunikation zwischen Tower und Cockpit. Nach einer aufwendigen Ermittlung haben unsere Messtechniker einen Mardervertreiber auf dem Dachboden eines Familienhauses in der Nähe des Flughafens gefunden. > Bremen Airport reported a fault signal in the communication between tower and cockpit. After an elaborate investigation, our measurement technicians found a marten repeller in the attic of a family home near the airport. That sounds like EMI to me, but a different example they gave was that the wireless keyfob of the complainant's car didn't work on one side of the house (but worked on the other side), with the culprit being a small weather station at a neighbor that ran on the wrong frequency "due to a defect". I'm not sure to what extend the offending devices affect safety critical infrastructure, but if they are sufficiently broadband, I'd expect them to hit such a frequency allocation. In that case, the BNetzA can and afaik will order the offender to turn off and fix before turning back on. Also note the german amateur radio club's information on the subject: https://www.darc.de/der-club/referate/emv/emv-abhilfemassnahmen/ https://www.darc.de/der-club/referate/emv/emv-abhilfemassnah... "EMC (the EMI-sense) mitigation measures".