January 14th, 2022
![](http://www.dj5ar.de/wp-content/uploads/2022/01/RA-Maps-JN49CV89KF-2022-01-14-21-50-1024x469.png)
F5ZNI on 13 cm in JN19BQ, 440 km away, is a good indicator for troposheric duting to the west. Drifting up and down, it is transmitting just a little below GPS locked DB0UX in JN48FX, just 105 km to the south.
![](http://www.dj5ar.de/wp-content/uploads/2022/01/2022-01-14-20_00-DB0UX-vs-F5ZNI-1024x356.png)
This is, how it usually looks, when I monitor F5ZNI on about 2320.899 MHz. DB0UX to the right with space 800 Hz lower. F5ZNI about 1250 Hz lower with space 500 Hz up.
![](http://www.dj5ar.de/wp-content/uploads/2022/01/2022-01-14-19_07-DB0UX-vs-F5ZNI-1024x356.png)
Tonight DB0UX appeared a little different, somehow screwing through the waterfall display.
![](http://www.dj5ar.de/wp-content/uploads/2022/01/2022-01-14-23_05_46-2022-01-14-19_07-DB0UX-vs-F5ZNI-Detail.png)
What happened?
![](http://www.dj5ar.de/wp-content/uploads/2022/01/RA-Maps-JN49CV89KF-Windmill-1-1024x469.png)
Well, there is a windmill in 500 m from my QTH a little north of the path to F5ZNI and the wind raised to blow with 6 km/h from NE ……