Module, Digital Audio Broadcasting Antenna: Operation

The digital audio broadcast antenna module is powered by a 9 volt output from the radio through the coaxial cable whenever the radio receiver is active. The module receives digital audio broadcast Radio Frequency (RF) signals supplied by the on-glass digital audio broadcast antenna grid elements screened to the inside of the left rear quarter glass. The capacitor selectively filters Radio Frequency Interference (RFI) from the received signals, while the module amplifies the received signals. The filtered and amplified signal is then sent through the coaxial cable to the radio digital audio broadcast antenna input.

The hardwired inputs and outputs to the antenna module may be diagnosed using conventional diagnostic tools and procedures. However, the module is diagnosed by substituting a known good external antenna to compare reception performance.