The map shows interference problems over the Middle East, Western Europe, and North America ( mostly the USA ).  Interesting that there are no problems over China, most of Russia, and North Korea. 

Mark D. 
WW2RDO

“In matters of style, float with the current. In matters of Principle, stand like a rock. “.   -   Thomas Jefferson 

Sent from my iPhone

On Nov 25, 2024, at 7:37 PM, sbjohnston--- via MRCA <[email protected]> wrote:


GPS/GNSS outages are a real problem.  My research seems to point to four main issues:

- GPS jamming.
- GPS spoofing.
- Environmental noise interference.
- Unintentional interference from other radio services.

Air safety is driving concern but of course it is an issue for all GPS users.

Here's a map showing GPS loss incidents for Aug 2021- Dec 2022:

https://www.wd8das.net/GPS-GNSS-interference.png

Here's a site that shows daily updates:



Steve WD8DAS  
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