The HDS 42 master/slave switch was developed for customers who also have an HDS 166 manual antenna set in addition to a fully automatic CAP turntable.
The HDS 42 connects both systems and automatically detects which system is currently receiving a signal. The highlight of this solution is that there is no need to reconnect the cables!
As the CAP converter also serves as the central unit here, it is possible to use the free "CAPcontrol" app via both reception paths.
You can also use the app to watch free-to-air channels on your smartphone/tablet.