Got my first experience with GPS Jamming. Apparently, lots of
truckers on I-35 near the Kansas-Oklahoma border were jamming today.
I would go from 8 satellites showing on my GPS Nav Display (Cambridge
Model 20 GPS) to none, lost distance to turnpoint, lost ground track,
lost bearing to turnpoint in the blink of an eye. Typically, after a
minute or two, the GPS Nav would resume navigation with three
satellites showing. It would in rather short order (10-15 seconds)
get back up to tracking 8 satellites. Repeat process in 2-5 minutes.

I am assuming this was GPS jamming, as nobody else flying from
Sunflower reported any sort of issues, and it only happened in this
one stretch along I-35. Interestingly enough, it happend only once (I
think ) after I crossed to the east side or I-35. Maybe I was just
far enough from the jammers.

My flight is uploaded to OLC. If you download it and watch it in any
playback, you will see me stop, then jump forward. This particular
GPS has worked perfectly before and since. It was only this one brief
section of one leg of the flight. Of course, it really gets your
attention when your display goes all dashes, and the computer says
"GPS Wait".

Anyone else had an "encounter" like this?

Just curious

Steve Leonard
Nimbus 3 VJS