Antenna System

Antenna System

Diversity Function

The "symphony"/ from MY 2004, "concert"/from MY 2005 and "chorus" systems have an antenna system with diversity function. This improves and optimizes reception quality.

The left antenna module controls the diversity function in the Cabriolet.

The signal coming into the Radio (R) is checked by the antenna wire (HF) from the Left Antenna Module (R108) and the result is sent back via an additional antenna connection (ZF) to the Left Antenna Module (R108).

If the antenna signal is too weak, the Left Antenna Module (R108) switches to another antenna (diversity function). This switching process is neither seen nor heard.

The procedure is the same as "switching diversity".

With "phase diversity", the Radio ( R) has two internal tuners with one input each (HF1/HF2).

If the signal received is interrupted, both signals are digitalized and separated in the tuners in the Radio (R) so that the disrupted signals are blocked out as much as possible.

If the reception signal is not disrupted, the Radio (R) constantly compares which antenna (amplifier) has the strongest reception. This is then transferred

In this case, the second tuner checks the frequency band in the background for better reception frequencies for the selected station. If a better signal is found, this tuner switches to reception and the other to the background.