F-86 Dancing radio compass

[Vincent90]

After doing some flights figuring out the NDB system between Sochi and Batumi, I'm now flying between Anapa and Vaziani (211 Mhz, morse: -. .-)

 

So I set up the compass before taking off by:

 

1) Set the system to Comp.

2) Selected the 200-410 Mhz scale

3) Turned the knob to 211 Mhz.

 

I got a good signal strength and the proper morse signal. However, the compass keeps dancing! Climbing to a higher altitude while keeping course 120; The radio compass remains on the fritz.

 

What am I doing wrong? :(