This product has been discontinued by the manufacturer and is no longer
Installing an XM Radio antenna in your home, boat, large vehicle, or another hard-to-reach location? If the cable that came with your XM antenna is too short for the job, Antenna Specialists offers the solution — the XMK25 25-foot extension cable.
Simply plug your XM antenna's connectors (not compatible with Sony XM antennas) into the XMK25's amplifier box, and route the cable to your XM receiver module. The in-line amplifier eliminates antenna signal loss to ensure reliable reception. 1-year warranty.