An unknown box. It is an antenna tuner for sure but I can not find any other information on it. Na245401
made by bou
In 1944
Bottom side here is the shaft to turn the tuning capacitor
Here the inside. The tuning capacitor is clearly visible. everything else seems to be missing sadly. This tuning capacitor seems to be the same one as in the Lo6k39a.
Kriegsmarine Radios and Sonar Equippment 