Super small and super reception

Recently, I have a garage and the antenna of my Yaris Verso was long enough to stretch like a catapult and then onto the roof to fast. As a substitute I chose the ACV Kurzstabantenne. When unpacking it seemed surprisingly short and after Rauf screws it still seems surprisingly small. For this reason, I had real concerns about radio reception. Fortunately, the reception is clear and I can not tell the difference to original antenna.