Product Description
Installing a single-input SIRIUS radio tuner in a home, extra-large vehicle (bus, truck, or RV), boat or any location where the cable that came with your SIRIUS antenna isn’t long enough for the job? Terk offers the problem-solving SIR-EXT50 50-foot extension cable for indoor and outdoor applications. A built-in amplifier eliminates antenna signal loss to ensure reliable reception.Amazon.com Product Description
With the Terk SIR-EXT50 Indoor/Outdoor Extension Kit, you can install a single-input Sirius radio tuner in your home, extra-large vehicle, boat or any other location where the cable that came with your Sirius antenna isn’t long enough for the job. The SIR-EXT50 features a 50-foot extension cable for both indoor and outdoor applications. And a built-in amplifier eliminates antenna signal loss to ensure reliable reception.

Note: The Sirius antenna is not included with the extension cable. This extension cable is only compatible with a single-input Sirius tuner.
Terk SIREXT50 50 Ft Extension Cable for Sirius Antennas