Sirius Satellite Radio - SIRIUS Wired FM Modulator Relay Description Are you having trouble with FM radio interference in your car while listening to your SIRIUS RECEIVER with an FM transmitter? The SIRIUS Wired FM modulator connects between your car's FM antenna cable and headunit allowing you to connect your SIRIUS Satellite radio receiver directly to your car stereo. This is a significant upgrade in sound quality from the FM transmitters that are included with many receivers. Internal relay switches in the modulator allow FM signal to flow through when a SIRIUS receiver is not connected or sending signal.

Cable Lengths:
FM antenna cable: 2 feet
Mini Jack Cable: 19 feet, 4 inches