About the SIRIUS 50-foot Antenna Extension Cable
Your SIRIUS antenna's cable may not be long enough if you're installing a SIRIUS radio in an extra-large vehicle, boat, business, or home. This 50-foot extension cable lets you make long cable runs with ease. Warranty: 1 year.
A SIRIUS antenna is not included. This extension cable is only compatible with single-input SIRIUS antennas.
What's in the box:
SIRIUS 50-foot Antenna Extension Cable owner's manual
- 50' Sirius antenna extension cable with in-line amplifier (has SMB connectors on each end)
- Rubber boot (installed on amplifier)
- Installation instructions (under packaging flap)
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More details on the SIRIUS 50-foot Antenna Extension Cable

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Features
Overview: The SIR-EXT50 is a 50' extension cable with an in-line amplifier for use with Sirius antennas; the kit is not compatible with XM satellite radio antennas. It can be used for Sirius mobile or home receivers.
Cable and Connector: The SIR-EXT50 antenna extension cable is a single 50' coaxial cable with single SMB connectors (without the plastic FAKRA-type plastic housing) on each end. The extension cable is equipped an in-line signal amplifier (10dB gain) on one end with a weather-resistant rubber boot. The other end plugs directly into single-input Sirius Satellite Radio receivers.
Extension Limits: No more than 2 extension kits should be connected back-to-back.
Cable Care: The full length of the extension cable should be used--it should not be cut, spliced or otherwise shortened. The cable should not be kinked. You should avoid bending the cable in a radius of less than an inch. The cable can be used outdoors, but it should not be exposed to severe environmental conditions. The in-line signal amplifier should be mounted upright, oriented so the label is readable right side up.
Specifications:
- Cable Type: RG-58
- Cable Length: 50'
- Frequency: 2300 to 2400 MHz
- Amplifier Gain: 10dB +/- 1dB @ 2300 MHz
- Return Loss: -10dB
- Connectors: SMB
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