Probe antenna using ground line

A vehicle radio system comprising:

• a radio frequency antenna configured to detect an audio signal;
• at least one tuner circuit;
• an antenna connector having a first connection coupled to the radio frequency antenna, a second connection coupled to the at least one tuner circuit to provide the audio signal to the at least one tuner circuit, and a third connection coupled to a chassis ground connection of a vehicle;
• a ground path extending from the chassis ground connection to the at least one tuner circuit, the ground path configured to detect a noise signal and communicate the noise signal to the at least one tuner circuit;
• and
• an audio processor coupled to the at least one tuner circuit and configured to process the audio signal and the noise signal to generate a noise-reduced audio signal.