Installation was simple and quality - wow.
Please remember, however, that the best Oehlbach plug does not help in the socket when the connection cable is no good. We have therefore decided in favor of two Oehlbach cable (1x TV, radio 1x) and have as opposed to "simple hardware store goods" better quality.
We measured this with a HD receiver and manual tuning: With two Oehlbach articles more stations are received as with simple connections. Was tested both in a day.
Absolute buy recommendation!