Antenna system 2, red

Fig 1: Antenna System 2, Red Circuit Diagram

Courtesy of SAAB-SCANIA OF AMERICA, INC.

1. Separate AM antenna loop at top of rear window.
2. FM1 antenna on same connection as the heating element.

   A filter in the antenna amplifier prevents the antenna signal from going to the heating element's power supply. An antenna filter on the ground side of the heating element prevents the antenna signal from going to ground.

3. FM2 antenna on the same connector as the AM antenna on the rear window. It is connected to a loop above the AM antenna and to the heating element.
4. The heated rear window is connected to the antenna amplifier and antenna filter. A capacitor prevents the voltage from reaching the antenna amplifier. The rear window heating is grounded via the antenna filter.

The antenna amplifier has a switching function that, working with the radio, selects the best FM signal (selects FM1 or FM2).

The amplified signal is fed via a coaxial cable to the radio.