That's why I bought the Hirschmann-disc antenna (there's also at Amazon) and installed. The reception performance was better, but still not good enough. In this antenna, the antenna wire on two FRP strips in the form of a "printed circuit" is located at about 5 mm wide and 25 cm long "PCBs" looped. The coaxial cable for radio was not long enough to be able to mount the antenna at the top near the rear view mirror can, so I have it installed on the driver's side in about five centimeters distance from the A-pillar.
Browse through the search engine g ** gle I came across the Blaupunkt antenna. My opinion after a test drive: Just great, highly recommended, can not imagine that there should be with an external rod antenna on the fender me better reception. An installation on the roof of the vehicle would be optimal, but ruled out in my car, because it is made of fiberglass and a ground connection to the vehicle is impossible.
Recommended location I have for Blaupunkt amplifier (round button) elected the dark box at the top behind the rearview mirror, the thin antenna wires leading to the left and right of the amplifier off. So from the inside because of the sunscreen frame (pleated) nothing to see from the antenna or even the small Verstärkerchen.
