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Extending GXM Antenna Cables

The GXM 30 or GXM 40 XM antenna cable can be extended. This extension cable will work for both the GXM 30 and GXM 40 XM antennas. Garmin offers a 6-foot extension cable. The part number is 010-10617-02.

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NOTE: Do not use more than one extension cable as this will weaken the signal and will cause the antenna to not communicate correctly with the device.