The signal behind the implementation corresponds to the signal strength before, which means that the bushings cause no signal loss, despite the small cross section.
I had long wondered how I put the four cable my Quattro LNB into the house. This window penetrations have solved my problem entirely.
Identical satellite window penetrations in the building market cost almost three times as much.
I am satisfied and would choose again this way of cable laying.
Addendum:
Hey what can I say: My fear, the bushings would the window movements not withstand, has not been confirmed. However, I must mention in addition that I have the cable fixed in the window frame using double-sided mounting tape so that they can not move when the window is opened or gecshlossen. ME I prevent such a poor performance due to strong unilateral loading cable break.